Workshop Manual Volume II - Transmission DR. ING. h. c. F. PORSCHE Aktiengesellschaft As webpage by http://www.uriarte.dk/porsche944 12.3.2018 |
This Workshop Manual describes all of the important operations for which special instructions are required to assure proper completion. This manual is essential for shop foremen and mechanics, who need this information to keep the vehicles in safe operating condition. The basic safety rules, of course, also apply to repairs on vehicles without exception. Only those repair jobs deviating from those of vehicle type 924 are described in the 944 Workshop Manual. Refer to the 924 Workshop Manual for all other information. The information is grouped according to repair numbers which are identical to the first two digits of the warranty job codes. The repair group index, list of contents and the register tabte are quick guides to find information in the manual. The layout drawings in this manual are numbered in the order of disassembling and, if necessary, also have information on assembly or installation and application of special tools. Descriptions of design and function can be found in the service training course reference material. This Workshop Manual will be kept up to date with Technical Information Bulletins, which will be made part of the manual from time to time. We recommend that these bulletins be filed in the standard type folder provided for this purpose.
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FIVE SPEED MANUAL TRANSMISSION 016 K Transmission Types Built Beginning With 1982 Model:
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5-speed manual transmission 016J and 016K (as from Model 85/2)
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FIVE-SPEED MANUAL TRANSMISSION 083 D FOR 944 S ('87 MODELS ONWARD)
With the exception of a few modifications in its design and as regards repair the 083 D transmission is the same as the 016 R Turbo transmission. The most important modifications are: - no transmission-oil pump is available - final drive ratio increased to 9 : 35 - transmission casing with machined recess for ring gear - design distance "Ro" 58.15 mm
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Technical Data - Type 083 F
* with transmission enclosing and additional oil cooler. Transmission 083 F is the same in design and repairing procedures as the 944 S transmission 083 D, except for a few deviations.
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USA values in parentheses Rest of the world and USA vehicles have the same transmission ratio as from model 88.
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Technical Data - Type 083 F
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Torque specifications for manual transmission
* Screws are microencapsulated. Must only be used once.
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TlGHTENING TORQUE FOR CLUTCH, CENTRAL TUBE, TRANSMISSION SUSPENSION AND SHIFT LINKAGE
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* Values of distance A in parentheses apply to spring when removed. Reassemble servospring/guide rod with assembly wire (3 mm dia. split pin).
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CHECKING CLUTCH DRIVE PLATE FOR WEAR Checking Remove cap Measure distance "A" with a suitable gage
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If distance is less than 15 mm there can be no guarantee that clutch disengages fully.
BLEEDING CLUTCH G e n e r a l I n f o r m a t i o n The use of a pressure bleeder is recommended.
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REMOVING AND INSTALLlNG CLUTCH
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DISASSEMBLlNG AND ASSEMBLlNG CLUTCH CONTROLS
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CHECKING DRIVE PLATES
N o t e Clutch liners cannot be replaced.
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This page is missing
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This page is missing
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OVERHAULING CLUTCH SLAVE CYLINDER
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CHECKING TORQUE CONVERTER
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DRAINING TORQUE CONVERTER
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INSTALLING TORQUE CONVERTER
CORRECTWRONG
N o t e : The pump shaft has a tapered spline to make it easier to engage the drive dog in the converter and oil pump.
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www.9ss1.dk/porsche944
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REMOVING AND INSTALLlNG TRANSMISSION (TYPE 016 K)
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REMOVING AND INSTALLlNG TYPE 016 J AND 016 K TRANSMISSION (SINCE 1985/2 MODELS) R e m o v i n g
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www.9ss1.dk/porsche944
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CHECKING OIL LEVEL - REPLACING MANUAL TRANSMISSION OIL
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TOOLS
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REMOVING AND INSTALLING GEAR CARRIER
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DISASSEMBLING AND ASSEMBLING GEAR CARRIER
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DISASSEMBLING AND ASSEMBLING REAR COVER
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TOOLS
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INSTRUCTIONS FOR DISASSEMBLY AND ASSEMBLY
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TOOLS
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N o t e The seal (No. 3) and its groove in the cover have been omitted since June, 1984. Sealing is now accomplished with Loctite No. 573 or 574.
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DISASSEMBLING AND ASSEMBLING TRANSMISSION CASE D i s a s s e m b l i n g
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Web code by Anders Nissen, Denmark
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TOOLS
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DISASSEMBLING AND ASSEMBLING INPUT SHAFT
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TOOLS
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DISASSEMBLING AND ASSEMBLING PINION SHAFT N o t e
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AUTOMATIC TRANSMISSION (Type 087)
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TRANSMISSION IDENTIFICATION
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TRANSMISSION - TYPES 944/924 S
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POSITION OF SHIFT PARTS IN DIFFERENT SELECTOR LEVER RANGE OR GEAR POSITIONS When complaints are received concerning insufficient acceleration and speed values or general drive problems, this table shows which shift parts ars operated in the different gears or ranges. This could point out which shift parts are malfunctioning. Example: no power transmission in 3rd and reverse gears. Possible causa: D + R clutch malfunctioning (must be closed).
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PLANETARY GEARS WITH SHIFT PARTS 1 - Plates for direct and reverse gear clutch 2 - Forward clutch 3 - Plates for forward clutch 4 - Plates for 1st and reverse brake 5 - 1st gear one-way clutch 6 - Reverse planetary gear set 7 - Forward planetary gear set 8 - Piston for forward clutch 9 - 2nd gear brake band 10 - Piston for 2nd gear brake band (shown offset 90°) 11 - Piston for 1st gear and reverse gear brake 12 - Oil pump 13 - Direct and reverse gear clutch 14 - Piston for direct and reverse gear clutch
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TORQUE SPECIFICATIONS FOR AUTOMATIC TRANSMISSION
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TORQUE SPECIFICATIONS FOR ATF COOLlNG AND ATF SUPPLY TANK (AUTOMATIC TRANSMISSION)
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TIGHTENING TORQUE FOR SHIFT CONTROLS {AUTOMATIC TRANSMISSION)
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TIGHTENING TORQUE FOR THROTTLE CONTROLS (AUTOMATIC TRANSMISSION)
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REMOVING AND INSTALLING SELECTOR LEVER CABLE
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N o t e : Use a rubber grommet in opening of suspension console to reduce the noise level. A - Rubber grommet (position 28 A)
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ADJUSTlNG SELECTOR LEVER CABLE
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REMOVING AND INSTALLING THROTTLE AND CONTROL PRESSURE CABLE
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REMOVING AND INSTALLlNG THROTTLE AND CONTROL PRESSURE CABLE (SERVICE SOLUTION)
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8. If necessary, adjust cable (see page 37 - 11).
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ADJUSTING THROTTLE AND CONTROL PRESSURE CABLE
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D - R o a d t e s t
S h i f t p o i n t s in KM/H 944/924 S
* Note that during testing the speedometer can deviate from the specified values within permissible tolerances.
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Function Test (Type 087 M and 087 N)
944 Europe / Rest of World and USA/Japan
This test should be performed on a dynamometer whenever possible. For the pressure test in idle, ac- celerate the car to specified read speed, take foot off of the accelerator pedal and read the pressure.
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It is not possible to adjust the main pressure. There could be the following causes for deviation from the specified values.
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A = Universal transmission jack
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REMOVING AND INSTALLING TRANSMISSION
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C o r r e c t T o r q u e C o n v e r t e r I n s t a l l a t i o n Converter is inserted against stop. a = approx. 10 mm. W r o n g T o r q u e C o n v e r t e r I n s t a l l a t i o n Converter has slipped forward (left arrow) and has pulled pump shaft out of drive dog/pump shaft splines A (right arrow). Bolting the transmission on the central tube in this position would destroy the drive dog.
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TOOLS
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CHANGING ATF AND CLEANING ATF FILTER SCREEN
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FLUSHING ATF COOLER AND LINES
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TOOLS
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DISCONNECTING AND CONNECTING AUTOMATIC TRANSMISSION ON FINAL DRIVE
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REMOVING AND INSTALLING SEAL FOR TURBINE SHAFT
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REMOVING AND INSTALLING TORQUE CONVERTER SEAL
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ADJUSTING AXIAL PLAY OF AUTOMATIC TRANSMISSION / FINAL DRIVE
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DISASSEMBLING AND ASSEMBLING AUTOMATIC TRANSMISSION
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* See change on Page 38 - 18a
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* See change on Page 38 - 18a ** Dropped as from October 1982
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DISASSEMBLING AND ASSEMBLING AUTOMATIC TRANSMISSION
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C h e c k i n g O n e - w a y C l u t c h
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MODIFICATIONS
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DISASSEMBLING AND ASSEMBLING ONE-WAY CLUTCH
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DISASSEMBLING AND ASSEMBLING FREEWHEEL WITH PLASTIC CAGE
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ASSEMBLY NOTES FOR DISASSEMBLY AND ASSEMBLY
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TOOLS
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DISASSEMBLING AND ASSEMBLING FORWARD CLUTCH
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TOOLS
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DISASSEMBLING AND ASSEMBLING DIRECT AND REVERSE CLUTCH
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ASSEMBLING OIL PUMP
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REMOVING AND INSTALLING VALVE BODY
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REMOVING AND INSTALLING TRANSFER AND SEPARATION PLATE (FROM 1983 MODEL ON)
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REMOVING AND INSTALLING TRANSFER AND SEPARATION PLATES
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Parts must be removed from a valve body to clean a very dirty valve body. These parts should be placed in a special tray to guarantee re-installation in original position. Outside shape of tray matches that of valve body to facilitate insertion of valves and springs.
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DISASSEMBLING AND ASSEMBLING VALVE BODY
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DISASSEMBLING AND ASSEMBLING VALVE BODY (RCD AND RCE TRANSMISSIONS)
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ASSEMBLING 2ND GEAR BRAKE
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* Operating lever for kickdown valve is flat on stop surface A as from 1983 model. N o t e : New operating lever can also be installed in old trans- mission. Old operating lever, however, may not be installed in transmission with new kickdown valve.
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REMOVING AND INSTALLING DIFFERENTIAL
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TOOLS
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DISASSEMBLING AND ASSEMBLING DIFFERENTIAL D i s a s s e m b l i n g
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A s s e m b l i n g
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Tools
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ADJUSTING PINION AND RING GEAR Note Careful adjustment of the drive pinion and ring gear is important to guarantee a long service life and quiet running for the final drive. This is why drive pinions and ring gears are matched during production and checked on special testing machines for the most favorable surface appearance and low noise levels in both directions of rotation. The position of quietest running is determined by moving the drive pinion in an axial direction, keeping the ring gear within specified backlash tolerances. The deviation "r" from the master gaube "Ro" is measured and inscribed on the outside periphery of the ring gear belonging to a pinion/ring gear set supplied as a spare part. Each set (drive pin ion and ring gear) may only be replaced together. ADJUSTMENT AND IDENTIFICATION OF PINION/RING GEAR SETS
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Recommended Sequence of Adjusting Pin ion and Ring Gear
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A d j u s t m e n t S u r v e y The pinion and ring gear only have to be adjusted when repairs on the final drive require the replacement of parts having direct influence on the adjustment. Refer to the following table to avoid unnecessary adjustments!
D e t e r m i n i n g I n s t a l l e d P o s i t i o n o f D r i v e P i n i o n (Actual Distance) This operation is only necessary when deviation "r" is not given on the ring gear and parts have to be replaced, which have direct influence on the drive pinion position. These would be both tapered roller bearings for drive pinion and transmission case. R e m o v i n g D i f f e r e n t i a l Complete universal gauge as show n in the list of tools, insert in transmission case and measure difference to "Ro" (max. deflection/point of reversal). Measured value will be equal to deviation "r". Adjust drive pinion as described after replacing parts. Use the deviation "r" used for determination of shim thickness "S3".
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Determining the thickness of shim "S3" S3 = e + r
Example: Value indicated
S3 shims available as spare parts: Thickness (mm) 0.20 0.25 0.30 0.35 0.40 0.65 0.90 1.15
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CHECKING FINAL DRIVE OIL LEVEL (AUTOMATIC TRANSMISSION) Amount: approx. 1 liter (1.06 US qt) of hypoid gear lube SAE 90 according to API Classification GL 5 (or MIL-L 2105 B). 1. Clean outside of filler plug and unscrew.
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CENTRAL TUBE TORQUE SPECIFICATIONS
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FINAL DRIVE TORQUE SPECIFICATIONS (AUTOMATIC TRANSMISSION)
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CHECKING OIL LEVEL IN FINAL DRIVE (AUTOMATIC TRANSMISSION) Capacity: approx. 1 liter (US qt) of hypoid gear tube SAE 90 acc. API Classification GL 5 (or MIL-L 2105 B). 1. Clean outside of filler plug and unscrew.
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TOOLS
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Locally made plate - 10 mm thick (item 11)
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DISASSEMBLING AND ASSEMBLING FINAL DRIVE
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A s s e m b l i n g
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DISASSEMBLING AND ASSEMBLING FINAL DRIVE CASE COVER
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4. Position seals correctly. A - Seal - final drive B - Seal - automatic transmission assembly
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DISASSEMBLING AND ASSEMBLING PINION
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Modifications:
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TOOLS
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D I S A S S E M B L I N G A N D A S S E M B L I N G D I F F E R E N T I A L
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Tools
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DISASSEMBLING AND ASSEMBLING LIMITED SLIP DIFFERENTIAL (40 % LOCK) D i s a s s e m b l i n g
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TOOLS
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A d j u s t i n g P i n i o n / R i n g G e a r - G e n e r a l I n f o r m a t i o n Accurate adjustments of the pinion and ring gear are immensely important for the service life and smooth running of the final drive. This is why pinions and ring gears are paired during manufacture and checked in special machines for tooth pattern and quietness in both directions of rotation. The position of smoothest running is determined by moving the pinion in an axial direction, whereby the ring gear is lifted out of the no-play meshing position far enough so that the backlash will be kept within specified tolerances. Deviation "r", in reference to master gage "Ro ", of the special testing machine used in manufacturing is measured and recorded on the outer periphery of the ring gear. Pinion and ring gear must always be replaced together. L o c a t i o n o f S h i m s
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A r r a n g e m e n t o f G a g e s t o D e t e r m i n e D e v i a t i o n e
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Total turning torque must exceed turning torque of pinion by at least 40 Ncm (3,5 in. lb); if necessary increase torque by tightening both adjusting rings accordingly.
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A = Universal transmission jack
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REMOVING AND INSTALLING CENTRAL TUBE
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Note When performing operations on the transaxle system that involve rotating or shifting the transaxle tube, always wear leather gloves to avoid injuries.
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DISASSEMBLING AND ASSEMBLING CENTRAL TUBE
1. Install ATF lines, control cable, suspension for exhaust assembly and insulation sheet.
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C h e c k i n g C e n t r a l T u b e
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A d j u s t i n g D a m p e r
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