Engine Block Heater Installation for 1985cc 20L SOHC Turbo VIN S FI
Engine Block Heater: Technical Service Bulletins
Engine Block Heater - Installation
FILE IN S.I. Man.
VOL. I
SEC. 9
PG. 63
Service Information
SUBJECT:
FITTING ENGINE BLOCK HEATER ISSUE: 12/84-724 P/N 02-04-255 M85 MODEL 900
The current accessory Engine Block Heater (P/N 02-04-255) may be fitted to all 1985 model Saab 900's. Please note the new location of the freeze plug
(right center) and the positioning of the heating element within the block (9 o'clock).
APPLICATION:
TORQUE
FROST PLUG
ELEMENT
MODEL
ENGINE
YEAR
IN.LBS.
LOCATION
DIRECTION
99
4 Cyl.2000 cc
73-80
20
Right Rear
3 o'clock
900
4 Cyl.2000 cc
79-84
20
Right Rear
3 o'clock
900
4 Cyl.2000 cc
85-
20
Right Center
9 o'clock
FIGURE 1
1.
Drain the coolant and remove specified freeze plug.
Tap on one side of freeze plug with a hammer and drift to cock the freeze plug in the hole. Grab the free edge with vise grips and work the plug out
of the hole.
2.
Thoroughly clean the freeze plug hole removing any burrs, compound, paint or rough spots.
3.
Apply a coating of grease to the heater O-ring and machined surface of hole in block. (To facilitate installation and prevent O-ring damage.)
4.
Back-off heater nut as far as possible, holding heater with element pointing in proper direction and finger on end of screw. Insert element and one
end of locking channel into freeze plug hole per figure #1.
5.
Center heater in hole and press in. Tighten to 20 in.lbs. (23 kpcm). See figure #2.
