STEERING
4203780 First Edition 7-15
7
IMPORTANT
Always replace springs as a set.
1. Inspect the springs (16 and 17) for bent, broken, or
distorted coils.
2. Inspect the finished ground surfaces of all the
components.
3. Inspect the slot edges and surface for nicks, scoring,
and rounding edges.
NOTE
The valve ring (9) and valve plate (10) are a matched set
and are not serviceable.
4. Inspect the hex drive (11) for wear.
5. Inspect the isolation manifold (13) for nicks,
scratches, and scoring. A polished wear pattern due
to valve plate rotation is normal.
6. Inspect the drive link (14) for wear and damage.
7. Inspect the thrust bearing (30) for dents, spalling,
and missing rollers.
8. Discard all seals and seal rings.
9. Inspect the commutator cover (21) and drive plate
(28) for wear and damage. A polished wear pattern is
normal.
Figure 7-22
10. Inspect the rotor (46) and stator (47) fit for wear and
damage.
11. Install rotor in stator and center the rotor lobe (48)
across from a lobe to be measured (45). Measure
rotor (46) and stator (47) fit for maximum trip
clearance of 0.003 in. (0.08 mm).
Assembly
See Figures 7-23 through 7-26.
46
47
45
48
TN1881
Service Part Kits
Seal Kit (Jacobsen PN 557738)
Metering Assembly Kit (Jacobsen PN 1004867-01)
Spring Kit (Jacobsen PN 502924)
Jacket Tube Kit (Jacobsen PN 4119120)
Needle Roller Kit (Jacobsen PN 502925)
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