1991 LEXUS SC400 Service Repair Manual

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LEXUS SC400 1991  Service Repair Manual 
27.  REMOVE FUEL RETURN PIPE(a)  Remove the bolt holding the fuel return pipe to the rearside of the LH cylinder head.
(b)  Remove the union bolt, two gaskets and return pipe.
28.  REMOVE DELIVERY PI

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LEXUS SC400 1991  Service Repair Manual 
(c)  Remove the four nuts, water by±pass joint and twogaskets.
31.  REMOVE REAR WATER BY±PASS JOINT (a)  Remove the bolt holding the water by±pass pipe to theengine hanger.
(b)  Remove the four nu

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LEXUS SC400 1991  Service Repair Manual 
37. DISCONNECT ENGINE WIRE FROM LH CYLINDER HEAD
Remove the five bolts, and disconnect the engine wire.
38.  REMOVE ENGINE HANGERS Remove the two bolts and engine hanger. Remove the two
engine hanger

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LEXUS SC400 1991  Service Repair Manual 
(c)  Set the timing mark (one dot mark) of the camshaftdriven  gear at approx. 105 angle by turning the hexagon
wrench head portion of the exhaust camshaft with a
wrench.
(d) Alternately   loosen and

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LEXUS SC400 1991  Service Repair Manual 
C. Remove exhaust camshaft from LH cylinder head(a)  Bring the service bolt hole of the driven s ub±gear
upward by turning the hexagon wrench head portion of
the exhaust camshaft with a wrench.
(b)

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LEXUS SC400 1991  Service Repair Manual 
(c)  Uniformly loosen and remove the eight bearing capbolts in several passes in the sequence shown.
(d)  Remove the four bearing caps, oil seal and intake camshaft.
HINT: Arrange the bearing caps in

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LEXUS SC400 1991  Service Repair Manual 
(e)  Remove the following parts:(1) Wave washer
(2) Camshaft sub±gear
(3) Camshaft gear spring
HINT: Arrange the camshaft sub±gears and gear springs (RH
side and LH side).
43.  REMOVE CIRCULAR PLUG

Page 1776 of 4087

LEXUS SC400 1991  Service Repair Manual 
45.  REMOVE CYLINDER HEADS(a)  Uniformly loosen the  ten cylinder head bolts on one side
of each cylinder head in several passes in the sequence
shown, then do the other side as shown. Remove the
twe