Allied Systems H5C Series, Service Manual

Page: 74 / 109

Section 3
3 - 15
LINE-IN Pressure Check
All installations without optional DRAG-BRAKE
LINE-IN Pressure Check
All installations with optional DRAG-BRAKE
Test Equipment:
• (1) 5,000 psi (34,474 kPa) Gauge
Connect pressure gauge to port:
• RI (Tee into existing line)
NOTICE
The values in Table 3-9 are based on
information available at time of publishing.
Refer to the service/maintenance manual
supplied with your dozer to verify the
available pilot pressure.
Instructions
1. With the engine shut off, connect pressure gauge in
line on the RI hose at the control manifold.
2. Start dozer and set to high-free idle.
3. Measure pressure with the control lever in the LINE-
IN position.
4. Pressure should be as specifi ed in Table 3-9.
If the LINE-IN pressure is not as specifi ed in Table 3-9,
check for:
1. Improper pilot supply pressure.
2. Malfunctioning control lever.
3. Leaking pressure hoses or fi ttings.
4. Restriction in pressure hose or manifold port.
Table 3-9 Hydraulic Pressure Readings
Dozer
Pilot Pressure in
PSI [kPa]
Test Port RI
TigerCat
920 (Y46F)
3,185 - 3,335
[21,960 - 22,994]
Figure 3-16 Test Equipment Setup
5000 PSI Gauge
at RI Port