9. TROUBLESHOOTING
In case of trouble, first check whether all recommended mounting and operating instructions have been completed.
The subsequent tables will assist you in troubleshooting and finding solutions.
If any adjustments are necessary on the transmission, please reference the Repair Manual.
Warranty claims will be forfeited if work on the transmision is performed by unauthorized persons during the war-
ranty period.
Symptom
Possible cause
Remedy
1. Transmission cannot be shifted.
1.1 Shifting lever is loose.
1.2 Remote controldoes not permit lever
travelrequired for testing.
1.3 Remote controlfaulty.
1.4 No shifting pressure available.
1.1 Tighten clamping bolt on shifting lever
1.2 Lift remote controloff, if gears can be
shifted by hand, correct remote control.
1.3 Repair remote control.
1.4 Refer to 7.
2. Delayed shift.
2.1 Shift linkage time misadjusted;
not allowing full engagement.
2.1 Lift remote controloff, if gear can be
shifted by hand, correct remote con-
trol. If the transmission cannot be
shifted correctly by hand, replace
the controlblock.
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 in clutch 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 clutch.
4. Transmission locked in gear.
4.1 Medium piston ring in input shaft in
control block is faulty.
4.2 Warped discs due to over heating 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
clutch.
5. Output shaft turns in neutralposition.
5.1 Rotary slide valve in block 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.
5.2 Disassemlby 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 dogged.
6.2 Fluid level in transmission.
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 transmis-sion, cooler and pipe-
lines for leakage and remedy same;
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 re-
place block as well.
6.6 Disassemble transmission, replace
clutch.
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Repair Manualand Spare Parts List
Section 9
