Service Manual

Troubleshooting Chart
Symptom
Vehicle will not attain normal
maximum speed.
Vehicle
will not move when vehicle
control
is moved.
Vehicle jerky or operating erratic.
Vehicle is "sluggish" under load
(operates
OK on level surface).
Probable Cause
Engine not operating at correct
Speed.
Control linkage damaged or
binding.
Bypass valve stuck partially open.
Charge check valve held open.
(Problem in one direction only)
Control linkage damaged or not
connected.
Drive between engine and transmis-
sion damaged.
Transmission
low on fluid.
Plugged filter.
Inlet air leak.
Loose drive belt between engine
and transmission.
Transmission low on fluid.
Large amount of water in
transmission fluid (evaporates
when hot, resulting in low fluid
level).
Suggested Remedy
Repair engine governor.
Repair control linkage.
Repair bypass valve.
Remove foreign material from
valve.
Repair or reconnect control
linkage.
Repair drive (replace broken belt,
repair sheared key, repair splined
coupling, etc.)
Refill reservoir. Purge air from
transmission.
Inspect inlet condition and
filter.
Tension drive belt (replace
if
necessary).
Refill reservoir. Purge air from
transmission
if necessary.
Drain fluid from reservoir and
unit, replace filter element and
refill with new fluid.
BDP Service Manual