Toyota Supra 1990 Manual page 332

LU-16
LUBRICATION SYSTEM - Oil Cooler and Relief Valve (7M-GTE)
LU0433
F5284
LU0541
4. REMOVE OIL FILTER BRACKET
(a) Disconnect the oil hose.
(b) Remove the union bolt, gasket, oil filter bracket and
O-ring.
REMOVAL OF RELIEF VALVE
1.
REMOVE OIL FILTER
(See page LU-5)
2. REMOVE RELIEF VALVE
(a) Remove the relief valve plug and gasket.
(b) Remove the spring and relief valve.
INSPECTION OF RELIEF VALVE
Coat the valve with engine oil and check that it falls smooth-
ly into the valve hole by its own weight.
Ifit does not, replace the relief valve. If necessary, replace
the oil filter bracket assembly.