1991 LEXUS SC400 Service Repair Manual

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Page 1617 of 4087

LEXUS SC400 1991 Service Repair Manual REPLACEMENT OF CRANKSHAFT OIL SEALS HINT: There are two methods (A and B) to replace the oil seal which are as follows: 1. REPLACE CRANKSHAFT FRONT OIL SEAL A. If oil pump is removed from cylinder b

Page 1618 of 4087

LEXUS SC400 1991 Service Repair Manual 2. REPLACE CRANKSHAFT REAR OIL SEAL A. If rear oil seal retainer is removed from cylinder block:(a) Using a screwdriver and hammer, tap out the oil seal. (b) Using SST and a hammer, tap in a new o

Page 1619 of 4087

LEXUS SC400 1991 Service Repair Manual ASSEMBLY OF PISTON AND CONNECTING ROD ASSEMBLIES 1. ASSEMBLE PISTON AND CONNECTING ROD(a) Using a small screwdriver, install a new snap ring on one side of the piston pin hole. (b) Gradually heat

Page 1620 of 4087

LEXUS SC400 1991 Service Repair Manual 2. INSTALL PISTON RINGS(a) Install the oil ring expander and two side rails by hand. (b) U s i n g a p i s t o n r i n g e x pander, install the two compression rings with the code mark facing upwa

Page 1621 of 4087

LEXUS SC400 1991 Service Repair Manual ASSEMBLY OF CYLINDER BLOCK (See Components on page EM±131) HINT: w Thoroughly clean all parts to be assembled. w Before installing the parts, apply new engine oil to all sliding and rotating surface

Page 1622 of 4087

LEXUS SC400 1991 Service Repair Manual 3. PLACE CRANKSHAFT ON CYLINDER BLOCK 4. INSTALL MAIN BEARING CAP AND LOWER THRUSTWASHERS A. Place main bearing cap and lower thrust washers on cyl- inder block (a) Install the two thrust washers

Page 1623 of 4087

LEXUS SC400 1991 Service Repair Manual (c) Mark the front of the main bearing cap nut with paint. (d) R e t i g h t e n t h e m a i n b e a r i n g c a p n u t s 9 0 5 i n t h enumerical order shown. (e) Check that the painted mark is

Page 1624 of 4087

LEXUS SC400 1991 Service Repair Manual 6. INSTALL CONNECTING ROD CAPS A. Place connecting rod cap on connecting rod(a) Match the numbered c onnecting rod cap with the connecting rod. (b) Align the pin groove of the connecting rod cap w
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