HYDRAULICS
4203781 First Edition 6-57
6
13. Calculate lift/steer pump leakage.
(Step 10 – Step 11 / Step 10 x 100 = Leak
Percentage)
Is lift/steer pump leakage 10% or less?
YES The lift/steer pump is good. Proceed to
step 14.
NO Proceed to next question.
Is lift/steer pump leakage 11% to 20%?
YES The lift/steer pump is marginal. Additional
testing is required. (See “Field Test
Procedures” on page 6-24.)
NO Proceed to next question.
Is lift/steer pump leakage 21% or more?
YES Repair or replace lift/steer pump. (See “Gear
Pump” on page 6-58.)
14. Disconnect and remove test equipment. Install all
hoses and fittings as noted prior to removal.
15. Install and connect all components as noted prior to
test.
16. Check hydraulic oil level. Add oil as needed. (Refer to
“Safety, Operation, and Maintenance Manual” for
correct oil specifications.)
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