Zf / Hurth Hydraulic Transmission - Mercury MerCruiser D2.8L D-Tronic Service Manual

TROUBLESHOOTING

ZF / Hurth Hydraulic Transmission

1. Transmission
2. Gears are shifted
3. Clutch is slipping;
Page 1C-34
Trouble
1. A. Shifting lever loose
gears cannot be
shifted
2. Lever travel of remote
sluggishly
3. A. Incorrect fluid used
propeller speed
too low as
compared to
engine speed
Possible Cause
B. Remote control does
not permit lever travel
required for testing
C. Remote control faulty
D. No shifting pressure
available
control is too short; lever
shift just short of minimum
traveling distance
B. Fluid contains water
C. Shifting pressure too
low
D. Wear on clutch discs
E. Piston rings in clutch
are damaged
SERVICE MANUAL NUMBER 22
Remedy
1. A. Tighten clamping
screw on shifting lever
B. Lift remote control off, if
gears can be shifted by
hand, correct remote
control
C. Repair remote control
D. Refer to Number 7
2. Lift remote control off, if
gears can be shifted by
hand, correct remote
control
3. A. Drain and refill with
correct fluid, flush
transmission while engine
runs in neutral position,
drain fluid, refill
transmission
B. Refer to Number 9
C. Refer to Number 6
D. Disassemble
transmission replace
clutch discs
E. Disassemble
transmission replace
clutch
90-860074--1 FEBRUARY 2002