JLG 4017 Service Manual - Manual (Page 85)

6.9 4017
Transmission:
6. Grinding or “clunking” noise
from transmission.
1. Oil level too low.
2. Transmission filled with incorrect
oil.
3. Incorrect clutch engagement.
4. Internal damage.
5. Broken diaphragm (flex plate).
6. Loose diaphragm (flex plate)
mounting capscrews.
1. Fill oil to correct level. Refer to
Section 2.4, “Fluids, Lubricants
and Capacities.”
2. Drain transmission and fill to
correct level. Refer to Section
2.4, “Fluids, Lubricants and
Capacities.”
3. Refer to Section 9.11.3,
“Transmission Solenoid Valves.”
4. Repair or replace parts as
needed.
5. Replace diaphragm (flex plate).
Refer to Section 6.6.1,
“Transmission Removal.”
6. Tighten capscrews.
7. Oil leaking from transmission. 1. Oil leaking from vent (high oil
level).
2. Drain plug loose and/or o-rings
damaged or missing.
3. Hose fittings loose.
4. Oil leaking at valve bodies
(possible valve body gaskets
damaged or missing and/or
mounting capscrews not tight).
5. Housing capscrews loose.
6. Oil leaking at pump (possible
pump-to-housing o-rings
missing or damaged, and/or
pump mounting capscrews not
tight).
7. Oil leaking at converter bell
(possible converter leak and/or
input shaft seal damage).
8. Oil leaking at output shaft
(output shaft seal damaged).
9. Housing damaged.
1. Remove drain plug and drain oil
as needed, until oil is at correct
level. Refer to Section 2.4,
“Fluids, Lubricants and
Capacities.” Replace o-rings as
needed and tighten plugs to 35
Nm (26 lb-ft).
2. Replace o-rings as needed and
tighten plug to 35 Nm (26 lb-ft).
3. Tighten fittings.
4. Replace gaskets and/or tighten
capscrews to 9,5 Nm (84 lb-in).
5. Tighten capscrews to 46 Nm
(34 lb-ft).
6. Replace o-rings and/or tighten
capscrews to 115 Nm (85 lb-ft).
7. Replace converter and/or input
shaft seal.
8. Replace output shaft seal.
9. Replace housing as needed.
6.7.1 Transmission Troubleshooting (Continued)
Problem Cause Remedy