NC SW6 Maintenance Instructions Manual page 76

CHART E1—Dumper gearbox
Cause
Dumper will not drive forward/reverse.
A If the transmission is noisy start at check 1
B If the transmission is overheating start at check 4
C If the transmission will not pull start at check 12
D If there is no drive in one or both directions start at check 17
E If the transmission is jumping out of gear start at check 29
F If the transmission is sticking in gear start at check 39
G If the rations are crash changing start at check 41
Is there noise when selecting direction?
1
Is there noise when running with direction selector in neutral and
2
ratio selector in 1st?
3 Is there air in the hydraulic system?
Is the fluid level correct?
4
Are the oil passages restricted?
5
Is the suction strainer restricted?
6
7 Is pump pressure as specified?
When flow testing pump is output low?
8
Fault Finding
Check handbrake released.
Check FNR lever engaged.
Check fuses.
Check drive inhibit relay.
Check forward & reverse relays
Check operation of solenoid valve on top of the gearbox
Check selector lever is engaging the gears on the gearbox turret
Check handbrake sensor switch
Check transmission oil level
Check
Remedy
Action
YES: Check 3
NO: Check 2
YES: Check 9
NO: Check 19
YES: continue running to expel air
NO: Check 4
YES: Check 5
NO: Check level only when machine
is cold & top up as required
YES: Clear the restriction
NO: Check 6
YES: Remove & clean strainer
NO: Check 7
YES: Check 9
NO: Check clutch pressure
maintenance valve is free to
operate
YES: Renew pump
NO: Check converter sprag clutch for
wear or slip
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