freightliner Custom Classic MT45 2022, Maintenance Manual

Page: 106 / 138

Steering System Torque Values
Description Size
Torque:
lbf·ft (N·m)
Steering Gear to Mounting Bracket
Flanged Capscrew M16 x 2 x 55
170–180
(230–244)
Flanged Capscrew M16 x 2 x 60
170–180
(230–244)
Countersunk
Capscrew
M16 x 2 x 50 150 (203)
Steering Driveline
Upper End Yoke
Pinch-Bolt Nut
7/16–20 47 (64)
Lower End Yoke
Pinch-Bolt Nut
7/16–20 47 (64)
Table 1, Steering System Torque Values
If the steering driveline end yoke pinch-bolt nut(s) is
loose, disassemble and check the input shaft serra-
tions, upper column and jacket assembly wheel tube
shaft serrations, and steering driveline end yoke ser-
rations for wear or damage. If worn or damaged, re-
place the parts as necessary, following the instruc-
tions in
Group 46 of the Walk-In Van Chassis
Workshop Manual , or take the vehicle to an autho-
rized Freightliner dealer.
WARNING
Failure to tighten the steering gear pinch-bolt nuts
to the recommended torque value could cause
disengagement of the components and loss of
steering control, possibly resulting in personal
injury or property damage.
46–05 Power Steering
Reservoir Fluid and
Filter Changing
Diesel Engine
1. Park the vehicle on a level surface, shut down
the engine, and apply the parking brake. Chock
the rear tires.
2. Remove the retaining clamp, cover, and cover
gasket.
3. Drain the power steering reservoir by disconnect-
ing the power steering hydromax return hose
from the reservoir. Keep the hose in an upright
position to prevent drainage of fluid. See
Fig. 4 .
4. Catch the fluid from the reservoir in a drain pan,
then cap the reservoir port.
5. Unscrew and remove the 10-micron filter that is
located on the bottom of the power steering fluid
reservoir.
6. Thoroughly clean the reservoir with a lint-free
cloth.
7. Install a new filter element. Tighten the filter ele-
ment finger-tight, then tighten one-eighth of a
turn past finger-tight.
8. Connect the hydromax return hose to the power
steering fluid reservoir.
WARNING
Fill only with approved clean fluid. Do not mix
fluid types. Any mixture or any unapproved fluid
could lead to seal deterioration and leaks. Fluid
leakage could cause loss of power steering assist,
possibly resulting in personal injury and property
damage.
9. Fill the reservoir with Dexron® III automatic
transmission fluid (ATF), or an equivalent.
NOTE: When assembling power steering parts,
use the same lubricant that is currently in the
power steering system. See the warning above.
10. Start the engine and let it idle. Have someone
turn the steering wheel to full-lock left and full-
lock right until no bubbles are seen in the reser-
voir. Turn off the engine.
11. Install a new cover gasket, cover, and retaining
clamp until firmly seated.
12. Check the power steering reservoir fluid level. If
the fluid level is low, add approved fluid to bring
the level up to the full mark on the dipstick.
Gasoline Engine
1. Park the vehicle on a level surface, shut down
the engine, and apply the parking brake. Chock
the rear tires.
Steering
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Walk-In Van Chassis Maintenance Manual, January 2022
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