Service manual

TROUBLESHOOTING SERVICE MANUAL NUMBER 22
Page 1C-38 90-860074--1 FEBRUARY 2002
ZF / Hurth Hydraulic Transmission (continued)
Trouble Possible Cause Remedy
10. Fluid leakage at
input shaft
10. A. Breather clogged by
paint or dirt
10. A. Remove dirt or paint
from breather
B. Shaft seal faulty B. Disassemble
transmission, replace seal.
If seal location on input
shaft is worn repair
surface
11. Fluid leakage at
output shaft
11. A. Breather clogged by
paint or dirt
11. A. Remove dirt or paint
from breather
B. Shaft seal faulty B. Disassemble
transmission, replace seal.
If seal location on input
shaft is worn repair
surface
12. Fluid leakage at
venting filter
12. A. Excessive fluid in
transmission
12. A. Pump out excessive
fluid with commercial hand
pump
13. Fluid leakage at
joints or screw
connections
13. A. Bolts are not tight 13. A. Tighten bolts to
specified torque
B. Seals on bolts have
been reused several times
B. Replace seals, tighten
bolts to specified torque
14. Fluid leakage at
filter cap or
breather
14. A. Filter cap not flush or
tight
14. A. Reinstall filter cap
flush with housing and
tighten
B. Filter cap O-ring
damaged
B. Replace O-ring
C. Fluid level too high C. Correct fluid level