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HYDRAULIC PUMP REGULATOR TEST AND ADJUSTMENT--ENGINE PULLDOWN - Continued
HYDRAULIC PUMP REGULATOR TEST AND ADJUSTMENT--ENGINE PULLDOWN - Continued

Maintenance Manual For Hydraulic Excavator Model 230Lcr
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TM 5-3805-280-24-1
Tests
8. Adjust the Load Adjusting Screw (Inner Spring)
(Engine Pulldown at High Pressure):
a. Adjust the system relief valve (D):
Run engine at fast idle.
Actuate and hold both propel functions over relief.
Loosen 32 mm nut (H). Turn second adjusting
plug (G) in to obtain Tighten nut.
b. Run engine at fast idle.
c. Actuate and hold both propel functions over relief.
D--System Relief Valve
E--First Adjusting Plug
F--27 mm Nut
G--Second Adjusting Plug
H--32 mm Nut
I--Piston
9025
25
112
Continued on next page
TX,9025,GG2661
1906MAY9710/14
6-243


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