Technical Service / Removing Transmission from Engine

Transmissions with different structures and weights are used on various cars and trucks. There are significant similarities between mounting and demounting as well as some differences. There are very important points to take into account while carrying out lapping process of transmission box in order to remove the failures in clutch system. Common processes for many transmissions are given below.

1.Empty transmission oil.
2. Demount differential or front end of cord shaft or universal joint according to the type. And remove the outlet part found at the back of transmission from the system.
3. Demount the connections that can prevent the removing of transmission like kilometer cable of gear change bars or handbrake cable.
4. Feed the back of the engine with an appropriate table. In most vehicles, transmission ground connection acts as a support. Therefore, in case of inappropriate lowering engine rear side tries to lower.
5. Demount pins and screws connecting transmission. However, in order to ease transmission lowering guide pins should be connected after top lock screws are demounted. 45% of the complaints delivered to REPA Clutch Technical Service are caused by the wrong lowering and lapping. In order to remove transmission from engine guide pins should be slipped.
6. Transmissions are very heavy. For this reason, special transmission jack should be used for lowering and lapping. A paneled hydraulic jack can also be used. Its weight should be carried by the jack.

ATTENTION! : The weight of transmission shouldn't be carried by range cylinder disk during mounting and demounting. After transmission has been lowered, control clutch disk, pressure, flywheel, flywheel screws and flywheel bearing.

7. While the pressure is being put in, mark flywheel and pressure assembly. Pressure and flywheel are parts rotating together and should be mounted in the same way they are demounted.

While demounting clutch pressure, remove screws fixed to flywheel by loosening one tour one another without giving any harm. In this demounting process, use a special rotation tool in order to rotate flywheel. Continue this process until spring power of pressure is removed.

Technical Service / Coil Spring Casting Pressure

In the figure, coil spring can be seen (Casting Pressure). Pressure springs are placed between pressure lattice and mirror. These springs apply a pressure on pressure mirror and compress disk.
In this way, rotation momentum is transferred from flywheel to pressure lattice and disk that can axial slide on range cylinder with the help of pressure mirror.

Technical Service / Perform Safety Controls after Disk and Pressure Mounting!

Carry out the tests we have given below in areas where traffic-flow isn't in question by securing your vehicle.

1. Static Test
Run your vehicle for a while and wait until the engine reaches its normal temperature.
Pull parking brake of your vehicle.
Take the necessary precautions.
Press clutch pedal for a while (4-5 seconds). While holding clutch pedal pressed, please gas and control whether there is an annoying noise by changing gears.

2. Pressure Bearing Adjusting Space Control
Coupling point of clutch pedal should be correct during the first takeoff of the vehicle. Clutch pressure bearing should come to its place again after clutch pressure bearing presses on pedal and pedal should be pulled to the starting point.

3. Takeoff Test

4. Sliding Test
When the vehicle is loaded and in upslope position, control the takeoff your vehicle without shaking at the first gear. The vehicle should definitely take off without shaking at the first and reserve gear. During takeoff, sliding shouldn't be in question.



Clutch Short code Clutch disc Short Code Description
WGS Pre-Damper for Commercial Vehicles
GT/BH/GS/GV Torsion Damper for Commercial Vehicles
E/B/D/Z Cushion
C/P/T/S Torsion Damper for Passenger Cars
GUD Rumber Torsion Damper for Passenger Cars
MPD/VTP Torsion Damper with Multiple Friction Mechanism for Passenger cars
CE Non-Organic Sintered Friction
M Diaphram Spring Clutch
MZ Pull-Type Release
MFZ Flat Flywheel
MFZ 2 Twin Plate Version
H Clutch with Deep drawn Housing
HV Reinforced Version
HB Leaf-Spring Suspended
G Clutch with cast iron Housing
G2 For Twin plate clutch
GT With Plate Spring for Dependent Release
LA For Flange-Mounted Gearbox
LA2 Twin Plate Version
DO Dual Clutch
DOT With Plate Spring for Dependent Release
K Coil Spring Clutch
KM With Diaphram Spring and Lever system
KS Eye bold Design
TK Shift Clutch
XN Power Take off-PTO