ryan 544915, Руководство по запасным частям и обслуживанию

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4 ADJUSTMENTS
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4.4 HYDROSTAT PEDAL AND LINKAGE ADJUSTMENT _____________________________
1. Locate the hydrostat pump arm (Part No. 547680) at
the rear of the machine and against the internal stop
of the pump.
2. Move the pump arm off the internal pump stop with
the pump arm stop bracket (Part No. 523410)
approximately 1/32” (.8 mm).
3. Connect the control link (Part No. 523419) with the
bellcrank (Part No. 547738) in the “Neutral” position.
4. Adjust the rod (Part No. 523419) so there is no
hydraulic fluid output to the drive motor.
5. Install the control rod (Part No. 523115) with the
foot pedal (Part No. 547614) in a “Forward” position
or a maximum of 1/16” (1.6 mm) off the floor pan.
The hydrostat pump arm (Part No. 547680) should
be against the stop bracket (Part No. 523410),
toward the rear of the machine.
4.5 STEERING WHEEL INSTALLATION AND ADJUSTMENT _________________________
For model 544916 and 544917
1. Install fork spindle bearings and fork.
2. Assemble steering box supports. Mounting bolts
should be finger tight and still allow movement of
brackets.
3. Install key (Part No. 551041) in spindle.
4. Assemble lower housing assembly (Part No.
880552) and idler adjustment bolt (Part No.
816452). Place one (1) spacing washer (Part No.
816446) over hole on inside of casting and insert
adjustment bolt. Place one (1) locating washer
(Part No. 816449) over adjusting bolt with knurled
side against outside of lower casting. Tighten nut
(Part No. 800612) to finger tight.
5. Attach above assembly to steering box supports.
Tighten mounting bolts to finger tight.
6. Place liberal amount of lubricant in recess on idler
adjusting bolt and place cluster gear idler (Part No.
830168) over adjusting bolt.
7. Install steering gear on spindle (Part No. 830167).
Apply Loctite #271 sealant to the spindle shaft
threads before installing fork spindle nut (Part No.
825672). Hold fork, tighten fork spindle nut (Part No.
825672) tight and torque to 60 - 70 ft.-lbs. (81 - 95
N-m). Apply a liberal amount of lithium base grease
lubricant to gear teeth and all bearing surfaces.
8. Block up wheel and adjust height of the lower
housing so that when fork is held against thrust
washer there is 1/64” - 1/16” (.4 mm - 1.6 mm)
clearance between top of cluster gear teeth and
bottom of steering gear teeth. Tighten three (3)
support mounting bolts. Move entire wheel
assembly up and down to ensure that there is not
more than 1/16” (1.6 mm) end play or spindle will
interfere with steering case.
9. Place one (1) spacing washer (Part No. 816446)
over idler adjustment bolt. Assemble upper housing
assembly to lower housing assembly. Place one (1)
locating washer (Part No. 816449) over adjusting
bolt with knurled side against casting and tighten nut
(Part No. 800612) to finger tight. Tighten the
housing attaching bolts and torque equally 3 - 4 ft.-
lbs. (4 - 5 N-m).
10. Rotate front fork side to side to check gear
alignment. If a smooth, free turning fork is not
achieved, loosen top three (3) mounting bolts of
support brackets and adjust housing assembly until
a smooth turning fork is acquired. Tighten bolts
and recheck turn of fork.
11. Further adjustment is allowed by loosening bottom
two (2) mounting bolts; however, when this
adjustment is required, it may be necessary to
remove top housing assembly and reset the 1/64” -
1/16” max. (.4 - 1.6 mm max.) dimension between
the idler gear and driven gear.
12. After completion of the above steps, torque the
following equally in sequence:
a. 1/4 - 20 assembly bolts 8 - 10 ft.-lbs.
(11 - 18 N-m)
b. 3/8 - 18 upper three (3) and lower two (2)
mounting bolts 20 - 25 ft.-lbs. (27 - 34 N-m).
13. To adjust backlash or hold front wheel. Check to
see that the fork does not turn. Loosen top and
bottom idler adjusting nuts and turn the steering
wheel counterclockwise and hold with light pressure.
Snug the bottom idler adjusting nut and then the top
adjusting nut.
Note: Care must be taken to prevent cocking the idler
shaft.
14. With slight pressure on the steering wheel in
counterclockwise direction, tighten bottom nut to 40
- 50 ft.-lbs. (54 - 68 N-m). Check backlash for a
maximum of 1/4” (6.4 mm) travel of the steering
wheel, then tighten top adjusting nut to 40 - 50 ft.-