Transmission: Fault Finding; Synchro Shuttle Gearbox Fault Finding - jcb 214e Service Manual

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Section F
35 - 1
Synchro Shuttle Gearbox
Before carrying out the checks listed the machine should, if possible, be operated to determine the fault area(s), and bring the
systems to their normal working temperatures.
Ensure that the correct quantity and grade of oil is used and that there are no obvious leaks.
A If the transmission is noisy, start at check 1.
B If the transmission is overheating, start at check 4.
If the transmission will not pull, start at check 12.
C
If there is no drive in one or both directions, start at check 17.
D
If the transmission is jumping out of gear, start at check 29.
E
If the transmission is sticking in gear, start at check 39.
F
G If ratios are 'crash changing', start at check 41.
CHECK
1 Is there noise when selecting direction?
2 Is there noise when running with direction selector
in neutral and ratio selector in 1st?
3 Is there air in the hydraulic system?
4 Is the fluid level correct?
5 Are the oil passages restricted?
6 Is the suction strainer restricted?
Is pump pressure as specified?
7
8 When flow testing pump, is output low?
9 Does the noise continue when direction selector
is in forward or reverse?
10 Is transmission misaligned?
11 Are the pump bushes worn?
12 Is the transmission not pulling in one direction only?
13 Is the transmission not pulling in both
Forward and Reverse?
9803/3280
Transmission
Fault Finding
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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 and top-up as
required.
YES: Clear the restriction.
NO: Check 6
YES: Remove and 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.
YES: Check 10
NO: Check 11
YES: Renew mountings and check position.
NO: Check 'converter out' pressure and flow.
YES: Renew
NO: Check converter for wear or cooler for restriction to
flow.
YES: Check 16
NO: Check 13
YES: Stall test machine, Check 14.
NO: Check 16
Section F
35 - 1
Issue 1