9. TROUBLESHOOTING
In case of trouble, check first whether all items of the mounting and operating instructions have been completed
with. The subsequent tables will assist you in troubleshooting.
Symptom
Possible cause
Remedy
1. Transmission cannot be shifted.
1.1 Shifting lever is loose.
1.2 Remote controldoes not permit
lever travel required.
1.3 Remote controlfaulty.
1.4 No shifting pressure available.
1.1 Tighten clamping bolt on shifting le-
ver.
1.2 Lift remote controloff, if gears can be
shifted by hand, adjust remote control
1.3 Repair remote control.
1.4 Refer to 7.
2. Delayed shift time.
2.1 Shift linkage misadjust not allowing
full engagement.
2.1 Lift remote controloff, if gear can be.
shifted by hand, adjust remote control.
If the transmission cannot be shifted
correctly by hand, replace the control
block.
3. Clutch is slipping, i.e. propeller
speed too low as compared to
engine speed.
3.1 Inadmissible fluid used.
3.2 Fluid contains water.
3.3 Shifting pressure too low.
3.4 Wear on clutch discs.
3.5 Piston rings are damaged.
3.1 Drain fluid, refill with prescribed fluid,
flush transmission while engine runs
in neutral position drain fluid, refill
transmission.
3.2 Refer to 9.
3.3 Refer to 6.
3.4 Disassemble transmission, replace
clutch discs.
3.5 Disassemble transmission, replace
piston rings.
4. Transmission locked in gear.
4.1 Medium piston ring in input shaft in
control block is faulty.
4.2 Warped discs due to overheating of
slipping clutch.
4.3 Needle bearings on input shaft are
worn out.
4.1 Remove control block, replace piston
ring, if control block is worn, replace
likewise.
4.2 Refer to 3.
4.3 Disassemble transmission, replace
needle bearing and check for damage
input shaft and gears.
5. Output shaft turns in neutralposition.
5.1 Rotary slide valve in control block is
worn.
5.2 Faulty needle bearing on input shaft.
5.3 Warped discs due to overheating of
slipping clutch.
5.1 Replace control block.
5.2 Disassemble transmission and input
shaft, replace bearing concerned and
other damaged parts.
5.3 Refer to 3.
6. Shifting pressure too low.
6.1 Fluid filter clogged.
6.2 Fluid level in transmission too low.
6.3 Fluid pump is worn out.
6.4 Spring in shifting pressure relief valve
is broken.
6.5 Piston rings on input shaft are faulty.
6.6 Piston rings in clutch are faulty.
6.1 Replace fine filter.
6.2 Top-up with fluid; in case of fluid loss
check transmission, cooler and
pipelines for leakage also refer to
10 through 13.
6.3 Replace control block containing fluid
pump.
6.4 Replace control block.
6.5 Remove control block and replace
piston rings. In case of wear in control
block due to faulty piston rings
replace block as well.
6.6 Disassemble transmission, replace
piston rings..
31
Repair Manualand Spare Parts List
Section 9
