Oil Pressure Switch; Vacuum Measurement; Oil Pressure Gauge Installation - Suzuki Samurai 1986 Service Manual

1) Disconnect lead wire from oil pressure
switch.
2) Remove oil pressure switch from cylinder
block.
Fig. 3-8-8 Oil pressure switch
3) Install oil pressure gauge (special tool)
to vacated threaded hole.
1. Oil pressure gauge k+ecial tool O!Xil5-77310)
Fig. 3-8-9 Oil pressure gauge installation
4)Start engine and warm it up to normal
operating temperature.
5) After warming up, raise engine speed to
3,000 r/min and measure oil pressure.
Oil pressure
specification
3-56
3.0-4.2
42.7
59.7 psi
at 3,000
6) After checking oil pressure, stop engine and
remove oil pressure gauge.
7) Before reinstalling oil pressure switch, be
sure to wrap its screw threads with sealing
tape and tighten switch to specified torque.
NOTE:
If sealing tape edge is bulged out from screw
l
threads of switch, cut off edge.
engine and check switch for oil leakage.

Vacuum Measurement

Engine vacuum that develops in intake line is a
good indicator of engine condition. Vacuum
checking procedure is as follows:
1) Warm up engine to normal operating tempe-
rature.
2) Install vacuum gauge @ (09915-67310), as
shown in Fig. 3-8-10. Install engine tacho-
meter.
Fig. 3-8- 10