Oil Pressure Relief Valve (6-Cylinder) - BMW 5251 Service Manual

11 9-26
/Lubrication
System
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Use Allen wrench to adjust chain slaclc (B) by turning thread-
ed spacer (A).
Oil pump chain adjustment
Slack
10 52 mrn (0.394i0.079 in)
-
Coat remaining oil pump mounting fastener with Loctite 03. In-
stall and tighten.
-
Remainder of assembly is reverse of disassembly.
-
After adding engine oil, start and run engine. Raise engine
speed to 2,500 rpm until oil pressure warning light goes out
(about 5 seconds).
Tightening torques
Lower oil pan to upper oil pan
M6 (8.8 grade) 10 Nm (89 in-ib)
M6 (10.9 grade) 12 Nm (9 ft-lb)
M8 (8.8 grade)
22 Nrn (1 6 ft-lb)
Oil drain plug to oil pan (M12)
25
Nm (I8 ft-lb)
Oil pump cover to oil pump (M6) 10 Nrn (89 in-lb)
Oilpump sprocket to shaft
TKO)
45
Nm (33 it-lb)
Oil pump to engine bloclc
M8 (8.8 grade)
22 Nrn (16 ft-lb)
Oil pressure relief
valve
(&cylinder)
Remove oil pump as described earlier. The oil pump pressure
relief valve is held in the side of the oil pump with a circlip.
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Inspect oil pump relief valve components and bore for scor-
4. Sleeve
5. Circlip
-
Install using a new circlip.
Oil pressure relief valve assembly
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ing or other damage.
1.
Control plunger
2. Spring
3. Sealing O-ring