Optional Oil Guard System
This section describes the procedure for removal of the Oil
Guard System scavenge, supply and vent lines as well as
the engine mounted fittings. Depending on your equipment
specification, the Oil Guard oil tank may be mounted to the
equipment. If so, consult your equipment repair manual for
removal steps and procedures.
1. If present, cut cable strap (A, Figure 37) or remove other
locking device to release oil fill cap (B) from oil filter
housing.
37
2. Rotateoil fill cap¼ turn to unlock. Remove cap from oil
filter housing.
3. Remove oil drain hose fromretainingclip, if present.
4. Rotate drain hose cap¼turn to unlock. Remove cap and
and drain oil into an approved container.
5. Grasp tab (C) and rotate oil filter ¼ turn to unlock.
Remove oil filter from oil filter housing. Discard oil filter.
NOTE: It is necessary to overcome the resistance of two
o-rings (D) to free oil filter from oil filter housing.
6. Disengageblueclip lock and remove crankcase
ventilation hose connector from oil tank fitting.
NOTE: Push on both ends of clip lock at the same time
to unlock hose connector. If connector is a tight fit,
disengage slots on each end of clip lock from tabs in
housing before pushing.
7. Disengageredclip lockand remove oil scavenge
hoseconnectorfrom oil tank fitting.
8. Disengagegreenclip lockand remove oil supply
hoseconnectorfrom oil tank fitting.
9. If the oil tank is engine mounted, remove 2 screws
with hex nuts and flat washers to release oil tank and
mounting bracket from crankcase.
10. Disengageblueclip lock and remove crankcase
ventilation hoseconnectorfrom crankcase fitting.
11. Disengagegreenclip lockand remove oil supply
hoseconnectorfrom crankcase cover fitting farthest from
the cylinder heads.
12. Holding the oil supply check valve (G, Figure 38) with a
25 mm wrench, remove the oil supply hose fitting (H) with
a 22 mm socket. Remove o-ring (I)from fitting or check
valve bore. Discard o-ring.
38
13. Remove the oil supply check valve from the engine bore.
14. Disengageredclip lockand remove oil scavenge
hoseconnectorfrom crankcase cover fitting (J) closest to
the cylinder heads.
15. Remove the oil scavenge hose fitting with a 16 mm
socket. Remove o-ring (K) from fitting or crankcase cover
bore. Discard o-ring.
16. Remove oil bypass cover (E) and seal ring (F) from
crankcase. Discard seal ring.
52 vanguardpower.com
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