TM 10-3930-641-34-2
TEE TEST PROCEDURE FOR HYDRAULIC SYSTEM (CONT)
(Sheet 14 of 27)
LOCATION/ITEM
ACTION
REMARKS
NOTE
Make a comparison of the test data on Charts
A and A-1. The percent of flow loss on Chart
A-1 is the maximum for best performance.
Components that are worn, or do not work
correctly, are found by their flow differential
(loss) and percent of flow loss or lower system
efficiency. System values for new and rebuilt
machines must not be more than shown in the
system tests shown on Charts A and A-1.
If the flow loss is acceptable in one or more
circuits, the tests for the pump and/or the
blocked cylinders must be done.
PUMP TESTS
These tests are used to find the efficiency of
the hydraulic pump. Install a Blocking Plate
Assembly in the pressure line from the hy-
draulic pump. This prevents the oil from
going through the system. All of the pump
flow now goes through the flow meter.
WARNING
Open the load valve on the flow meter fully
before engine is started. The main relief
valve is not a part of the circuit for the pump
test. If the pressure gets too high, it is
possible to cause injury to personnel or
damage to equipment.
Go on to Sheet 15
7-137
