13
TROUBLE SHOOTING
TROUBLE
PROBABLE CAUSE
REMEDY
F.
The hoist will
not lower the
load or not
lower the load
smoothly.
1. The friction brake may not be releas-
ing as a result of a defective brake
cylinder seal.
NOTE:
If the brake cylinder seal is
defective you will usually notice oil
leaking from the hoist vent plug.
2. Friction brake will not release as a
result of damaged brake disks.
3. Same as B-4.
4. Same as A-3.
5. Same as A-5.
6. Control valve handle being operated
too quickly.
7. Insufficient gear oil in cable drum.
8. Control valve does not have good
metering characteristics.
Disassemble and inspect the brake cylinder seal.
Disassemble brake to inspect brake disks.
Same as remedy for B-4.
Same as remedy for A-3.
Same as remedy for A-5.
Operate control valve smoothly when starting and stop-
ping a load. Conduct operator training as required.
Remove oil level plug and check oil level. Fill to proper
level.
See “Hoist Installation” section for control valve specifica-
tions.
G.
The hoist runs
hot.
1. Same as A-5.
2. Be certain that the hydraulic system
temperature is not more than 180
degrees F. Excessive hydraulic oil
temperatures may be caused by:
A. Plugged heat exchanger.
B. Too low or too high oil level in
hydraulic reservoir.
C Same as A-1.
D Hydraulic pump not operating effi-
ciently.
3. Excessively warn or damaged internal
hoist parts.
4. Same as F-7.
Same as remedy for A-5.
Thoroughly clean exterior and flush interior.
Fill/drain to proper level.
Same as remedy for A-1.
Remove and inspect pump.
Check suction line for damage. If pump is belt driven,
belts may be slipping. Replace/tighten belts.
Same as remedy for F-7.
H.
Hoist
“chatters”
while raising
rated load.
-
1. Same as A-1.
2. Same as B-4.
3. Hydraulic oil flow to motor may be too
low.
4. Same as F-6.
Same as remedy for A-1.
Same as remedy for B-4.
Increase pump rpm.
Same as remedy for F-6.
Summary of Contents for BRADEN Gearmatic BG6A
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