JLG 3507 Service Manual page 64

Transmission:
Problem
7. Oil leaking from transmission.
6.10
Cause
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.
Remedy
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
130 Nm (96 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 (7 lb-ft).
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.
3507, 3508, 3509, 3512, 3513, 4007, 4008, 4009, 4012, 4013
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