Toyota Celica 1993 AT200 series Repair Manual page 653

STEERING _ POWER STEERING
G E A R H O U S I N G
l f t h 6 g e a r h o u s i n g i s s e c u r s d
so always first secure it in the
placing it in the vise.
directly in a vise during overhaul, thera is dang6r of deforming it,
SST provided (rack & pinion stosring rack housing stand) before
The oil seals on both sides of the power cylinder are for tho prevention of leakage of the high
pressuro fluid which acts on tho piston. Always uso new oil seals when reassembling ano oe very
careful not to scratch or damags them.
Because of the high pressure, 6v6n tho slightest scratch will cause fluid leakage, resulting in an
inoperative power stee rin g syslom.
Also, be very careful not to scratch the sliding portion of the rack which makes contact with the
oil seals. When removing the rack ends from the rack, it is very easy to cause a burr when holding
tho tip of the rack with a wrench. Therefore, before assembling the rack, frrst check the tip for
burrs and remove any with an oil stone.
Teflon rings are used for the piston and control valve. These teflon rings are highly durable
against wear, but if it is nsc€ssary to replace them, be careful not to strotch the new onos.
Aftsr installing a teflon ring into its groov€, snug it down into the groove before assembly of the
cylinder or housing to provent possible damage.
Teflon Ring