Usage:
320B (3MR, 5BR, 1CS, 1XS, 4FS),
320B L (4MR, 6CR, 7JR, 6LW),
320B LL (6LS, 9JS),
320B N (4NR, 2AS),
320B S (5MS),
322B (3NR, 8MR),
322B L (5CR, 8NR, 1AS, 1YS, 2ES),
322B LN (1ZS),
325B (8GM, 8PR),
325B L (6DN, 7EN, 2JR, 8RR, 1GS, 4DS, 5BS),
325B LN (8FN),
330B (9HN, 8SR, 5EZ),
330B L (2RR, 3YR, 6DR, 8TR, 1JS, 4RS, 5LS),
330B LN (5LR) Excavators
- SUPPLEMENT: AUGUST 17, 1998
Service Magazine SEPD0412, Article 4, Page 2, April 13, 1998; "New Relief Valve For Main Hydraulic System Improves Maintaining Pressure Setting".
Disregard this article and see Service Magazine SEPD0430, Article 6, Page 5 with the same title.
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A new relief valve replaced the former relief valve for the main hydraulic system. The new relief valve has the poppet valve and seat fitted together by a coining operation. The poppet valve also has a lower rate, higher strength spring to hold it against the seat. In the new relief valve, the poppet valve has a different adjuster.
The pressure setting of the former relief valve could drop after the poppet valve and seat match in after a few hours of operation. This required readjustment of the relief valve to the correct pressure setting.
The new 153-5211 Relief Valve (1) replaces the former 119-5338 Relief Valve. The new 153-5211 Relief Valve (1) is adaptable to first production for the above models.
Typical Control Valve