SECTION 58 -- ATTACHMENTS AND HEADERS -- CHAPTER 2
58-17
Slide the disc hub, 1, onto the top cap shaft; if it
is not perfectly timed to the adjacent discs, re-
move the disc hub, rotate it 90° and reinstall it.
Continue to do this until the disc hub is properly
timed; one of the four positions will provide cor-
rect timing.
NOTE: With the adjacent discs positioned at 90
°
,the
breather, 3, should be completely visible through the
disc hub bolt hole, 4, when the hub is properly timed.
After determining the correct position, apply a
thin coating of grease to the seal lip and sealing
surface on disc hub, and carefully slide disc hub
onto shaft past seal. If the module has a hex head
cap screw, discard this cap screw and install a
new 12-point cap screw. Apply a small amount of
silicone sealant to the end of the disc hub retain-
ing bolt, 1, and torque it to 150 ft. lbs. (224 N⋅m)
or turn the bolt 90° after the bolt has contacted
the washer.
19986023
1
2
4
3
37
7. The tie bolts which connect the cutterbar togeth-
er are torqued using the degree method of torqu-
ing, which requires a special procedure. Install
holding tools, 1, onto the nuts on one end of each
tie bolt. Then, using tool, 2, with a torque wrench,
torque both tie bolts to 50 ft lbs.
NOTE: Always torque or turn the rear tie bolt first.
38
8. Use a marker or scribe to mark the front and rear
nut positions, 1, Figure 39, relative to spacer, 2.
Usingwrenchanda3/4″ breaker bar, turn each
nut 1/2 turn at a time to achieve one full turn on
each tie bolt, starting with the rear tie bolt first.
This will give a total torque on the tie bolt of 50 ft
lbs plus 1 turn, for a clamping force of 35,000 to
37,000 Ibs.
NOTE: It may be necessary to use a cheater bar to
obtain enough leverage to complete tightening the tie
bolts. Ensure the mower is adequately secured to
prevent tipping unit off its jackstand.
9. Remove special tools from the cutter bar; it may
be necessary to use a hammer to knock the hold-
ing tools off of the nuts.
10. Reinstall the rock guard, skid shoe and disc on
the replacement module.
19986023
1
2
2
1
39
To Next Page
Loading...
