PRESSURE RELIEF VALVE TESTS (Cont) - TM-5-2410-237-231165

TM 5-2410-237-23

HYDRAULIC SYSTEM TESTS - CONTINUED

0227 00

PRESSURE RELIEF VALVE TESTS - CONTINUED

If equipped with a ripper, run engine at low idle

and raise ripper until lift cylinders bottom out.

Main relief valve should open 2250 + 50 or 0 psi

(15,513 + 344 or 0.0 kPa).

Block hose (2) at both blade lift cylinders.

(1)

Disconnect hose (2) at lift cylinder head

(2)

Install O-ring and cover and reconnect

hose (2).

387-786

With engine at low idle, operate blade control lever to extend lift cylinders. Main relief valve should open at 2250

+/- 50 or 0 psi (15,513 +/- 344 or 0.0 kPa).

Shut down engine. Move all hydraulic control levers to all positions to relieve pressure in lines. Return all control

levers to HOLD position.

Remove block in line to blade lift cylinders.

(1)

Disconnect hose (2) (WP 0220 00).

(2)

Remove O-ring and cover and reconnect hose (2).

NOTE

One 0.005 in. shim will change relief pressure by 35 psi (240 kPa).

One 0.048 in. shim will change relief pressure by 335 psi (2310 kPa).

To adjust main relief valve setting, perform Relief Valve Setting Adjustment in WP 0201 00.

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