RD 12/RD 12A
Drive System
wc_tx000667gb.fm
51
5.3 Checking the Drive System Operating Pressure
Background
Failure of the drive circuit to reach operating pressures is normally caused by a worn or
damaged drive pump; however, the problem could also be the result of a badly worn motor.
Prerequisites
Machine on a firm, level surface
3000-psi pressure gauge
Hydraulic oil warm
Procedure
Follow the procedure below to test the drive system operating pressure.
1. Install a 3000-psi gauge in the forward test port
(a)
on the drive pump.
2. Start the engine and run the machine at full throttle.
3. Shift the control lever to forward and record the pressure on the gauge.
4. Stop the engine.
5. Install the gauge in the reverse test port
(b)
and repeat the procedure while operating in
reverse.
Note:
Operating pressures will increase significantly when running the machine uphill, off
road, or against an object.
The drive system operating pressure has now been checked.
Summary of Contents for RD 12A
Page 1: ...5000192242 02 0912 5 0 0 0 1 9 2 2 4 2 Repair Manual Roller RD 12 EN...
Page 15: ...RD 12 RD 12A Safety Information wc_si000302gb fm 15 1 4 Label Locations X FF...
Page 21: ...RD 12 RD 12A Safety Information wc_si000302gb fm 21 Notes...
Page 25: ...RD 12 RD 12A Operation wc_tx000865gb fm 25 53 47 54 61 50 62 55 wc_gr004114 56...
Page 29: ...RD 12 RD 12A Operation wc_tx000865gb fm 29 wc_gr002951 N F R 55 42 44 54 10 15...
Page 119: ...RD 12 RD 12A Disassembly Assembly wc_tx000671gb fm 119...
Page 120: ...Schematics RD 12 RD 12A wc_tx001073gb fm 120 10 Schematics 10 1 Hydraulic Schematic...
Page 122: ...Schematics RD 12 RD 12A wc_tx001073gb fm 122 10 4 Electrical Schematic A RD 12A...
Page 124: ...Schematics RD 12 RD 12A wc_tx001073gb fm 124 10 6 Electrical Schematic B RD 12A...
Page 126: ...Schematics RD 12 RD 12A wc_tx001073gb fm 126 10 8 Electrical Schematic RD 12...
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