Opel 1900 1973 Service Manual page 17

1973 OPEL SERVICE MANUAL
Figure OC-5 Brake Master Cylinder
Figure OC-6 Tire Rotation Methods
when the clutch pedal has in excess of 1 l/4 inch fr&
travel. See Figure OC-7.
Rear Axle
Change lubricant every 12,ooO miies when vehicle is
used for pulling a trailer.
Cooling System
Check at 12-month or 12,000~mile
radiator cap and filler neck with clean water, pres-
sure test system and radiator cap for proper pressure
holding capacity (tighten hose clamps and inspect
condition of all cooling and heater hoses). Replace
hoses every 24 months or 24,000 ,miles or earlier :if
checked, swollen or otherwise deteriorated.
Also each 12 months or 12,ooO miles, clean exteribr
of radiator core. Every 24 months or 24,OCO miles,
Floor-Pan -
drain, flush, and refill the cooline svstem with a new
coolant so&ion of permanent
water for protection-of -20°F. D-6 NOT REMOVE
RADIATOR CAP WHEN SOLUTION IS HOT
AND
Wheel Bearings
Clean and repack front wheel bearings with a lubri-
cant as specified on the lubrication chart, Figure
oc-1.
Automatic Transmission Fluid
Under normal driving conditions, change the trans-
mission fluid every 24,000 miles. Under unusual con-
ditions such as constant driving in heavy city traffic
during hot weather, trailer pulling, etc., this service
should be performed at 12,COO mile intervals.
General Motors DEXRON Automatic Transmis-
sion Fluid, which has been especially formulated and
tested for use in your automatic transmission, is
recommended. Other automatic transmission fluids
identified with the mark DEXRON are also recom-
mended.
Check the fluid level at each engine oil change
intervals, wash period. To make an accurate fluid level check:
1. Drive car several miles, making frequent starts and
stops, to bring transmission up to normal operating
temperature (approximately 180-190'F.)
2. Park car on a level surface.
3. Place selector lever in "Park" and leave engine
running.
Figure OC-7 GT Clutch Lash
UNDER PRESSURE.
Clutch Pedal
anti-freeze and