Toyota 1PZ Repair Manual page 205

FU-66 FUEL SYSTEM - Injection Pump
(b) Adjust the installation direction of boost compensator
diaphragm.
(1) Install the shim and diaphragm.
HINT: Do not assemble the spring.
(2) While pushing on the diaphragm, measure dimen-
sion " X " with vernier calipers as shown.
Dimension "X": 6.9-7.1 mm
HINT: Measure at the center of the hole.
(3) Place matchmarks on the diaphragm and gover-
nor cover.
(4) Remove the diaphragm.
(c) Insert 1.5-2.5 cc (0.09-0.15 cu in.) of engine oil
into the bushing hole.
(d) Install spring, shim and diaphragm.
(e) Align the matchmarks on the diaphragm and governor
cover.
(f) Using a 5 mm hexagon wrench, install the four bolts.
(0.272-0.280 in.)