Oil Pressure Relief Valve - Continental Motors TSI0L-550-C Operation, Maintenance & Installation Manual

Oil Pressure Relief Valve

If difficulty is experienced achieving the specified
oil pressure adjustment:
1. Cut safety wire and remove the oil pressure
relief valve.
2. Inspect valve plunger for scoring and nicks.
3. Inspect face for roughening.
4. Inspect oil pressure relief valve limits in
accordance with "Service Limits." Oil pressure
relief valves that
roughening of the conical face, or that exceed
the specified limits, must be discarded and
replaced with new.
5. Inspect the oil pressure relief valve seat for
scoring, nicks, roughening or embedded metal
particles. Seats with these indications must be
refaced. If metal is embedded in the relief valve
seat, determine where it came from.
6. Reface the pressure relief valve seat in the oil
pump housing with an Oil Pressure Relief Spot
Facer. See section 2, chapter 1, "Tools,
Equipment, Sealants and Lubricants."
CAUTION...
During pressure relief valve seat refacing, use light
finger pressure when turning the refacing tool.
7. After the refacing procedure, the depth from the
top of the oil pump housing to the seat face must
not exceed the specified limits.
CAUTION...
Thoroughly clean the oil pressure relief valve cavity
after the refacing procedure. All debris resulting
from the refacing procedure must be removed.
have scoring, nicks,
8. Reassemble serviceable or new relief valve
housing and adjusting screw. Turn the adjusting
screw approximately halfway. Install new
copper washer and nut.
9. Assemble plunger, spring, and washer and slide
the assembly into the housing.
10. Coat the housing threads with TCM antiseize
lubricant.
11. Insure that relief valve components are aligned
and install in oil pump housing.
12. Torque housing to 240 - 260 inch pounds.
13. Safety wire oil pressure relief valve housing in
accordance with section 2, chapter 5, "Lockwire
Procedure." Engine oil pressure must be
adjusted prior to returning to service in
accordance with section 2, chapter 18, "Oil
Pressure Adjustment."
When performing lubrication system repairs prior to
engine TBO the following dimensional limits may
be used.
CAUTION...
When performing dimensional
following "Service Limits" may be used. However,
they are only intended as a guide for re-use when
performing maintenance of the engine prior to major
overhaul. Parts with dimensions or fits that exceed
service limits must not be re-used. Parts with values
up to and including service limits may be re-used,
however, judgment should be exercised considering
the PROXIMITY of the engine to its recommended
overhaul time.
Lubrication System
inspection the
15-9