9B-3
SECTION 9B. FAILURE ANALYSIS
GENERAL
The following table lists common problems, probable
causes, and suggested remedies with section refer-
ences to detailed descriptions of remedial procedures.
PROBLEM PROBABLE CAUSE REMEDY
1. Lift/lower functions do not
occur when the lever is actu-
ated
a. Hydraulic lines are kinked
b. Hydraulic charge pump faulty
c. Hydraulic cylinder is not func-
tioning
d. Lift and lower control valve is
malfunctioning
a. Replace lines (Section 8C)
b. Test pump (Section 8L or
Section 8M)
c. Test cylinder (Section 8L or
Section 8M)
d. Test valve (Section 8L, or
Section 8M)
2. Slow or noisy drive or lift/
lower operation
a. Low fluid level in hydraulic
tank
b. Loose hose connections
c. Air in system
a. Fill tank, check for hydraulic
leaks
b. Tighten connections
(Section 8C)
c. Bleed system
9B
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