Bosch Rexroth SM 12 - Page 7

Visual defectsTableau 4:
Malfunction Probable cause Additional Checks Remedy
Spool leaking oil Spool seals defective Replace spool seals (see § 7.2)
Check the rubber boot condition
Oil leakage at pressure
relief valves and plugs
Seals defective Remove pressure relief valve or plug
and replace seals (see § 7.1)
Oil leakage between
elements
Seals between elements defective Remove working sections and
replace seals (see § 8)
Control block assembly tie rods
not enough tight
Check tightening torque Tight to 18 ± 10% N.m.
CAUTION
REMOVE CONTROL BLOCK
FROM ITS FIXATION POINTS
Oil leaking from hydraulic
operator housing
Seal between housing and body
defective
Replace seal (see § 7.7)
R5 manual operation boot
damaged
Replace boot (cf. § 7.6)
RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 7/30
Troubleshooting