12.375” (314.3 mm), the chain should be discarded.
DO NOT repair sections of a chain. Replace the com-
plete chain.
Chain anchors and sheaves also require inspection for
wear or broken fingers and worn flanges. If a chain has
been replaced, operate under load conditions and re-
check the torque. Chains are adjusted by torquing the
Anchors to 25 ft-lb (34 Nm). Lubricate with 80/90 wt.
oil.
CHECK BOOM SLIDE PADS
WEAR & CLEARANCE
This boom is equipped with special nylon low friction
slide pads between the telescopic sections (see illustra-
tion). These are pre-greased and initially worn-in at the
factory. Normally greasing is not required, except for
maintaining a light film of grease on the pad tracking
areas of the boom sections. An exception would be if a
boom section has been replaced.
Visually check for loose pad bolts. The bolts are
torqued to 30 ft-lb (40 Nm). If the bolts are re-torqued
at any time, Loctite
thread lock must be re-applied to
the bolts.
If the boom starts to chatter under load, grease the slide
pads and wipe off the excess. If a top or side slide pad
shows excessive wear, loosen bolts. Insert shims to
each side or top and bottom for even distribution of
clearance. Re-apply Loctite
®
thread lock to the bolts
and re-torque to 30 ft-lbs (40 Nm). Bottom slide pads
should be replaced when the thickness is worn down to
3/8” (9.5 mm).
6. Proceed to start the machine. If it does not start
immediately, start the jumper vehicle engine to avoid
excessive drain on the booster battery.
7. After the machine is started and running smoothly,
have the second person remove the jumper cables
(negative (-) jumper cable, first) from the jumper vehi-
cle battery, and then from the disabled machine while
making sure NOT to short the two cables together.
Allow sufficient time for the alternator to buildup a
charge in the battery before operating the machine or
shutting off the engine. Be sure to discard the cloths
and reinstall the vent caps removed in Step 2, above.
NOTE:
If the battery frequently becomes dis-
charged, have the battery checked for possible
dead cells or troubleshoot the entire electrical
system for possible short circuits or damaged wire
insulation.
CHECK ALTERNATOR &
FAN BELT TENSION
Refer to the engine manual relative to proper belt ten-
sion adjustment and replacement procedures. If the belt
shows wear or cuts, it should be replaced. Order
replacement belt from your engine dealer.
CHECK BOOM LEAF CHAINS & SHEAVES
Inspect the leaf chains for wear and proper tension.
Two of the chains and sheaves are on the top of the
boom. A third is accessible from inside the rear of the
boom (see illustration). Run the boom out slowly to
inspect. Conditions to look for includes cracked or bro-
ken plates, protruding or turned pins, excessive wear.
With a steel tape, measure 16 links of the strand that
flexes over the sheaves. When the distance measures
Chain Hookup Detail
Rear Chain
Front Chain
Sheave
Sheaves
Inner Section
Outer
Intermediate
Section
Section
Slide Pad Detail
Rear Inner
Shim
Pad
Front
Outer
907861/AP698
46
PRINTED IN U.S.A.
Summary of Contents for Dynalift 663
Page 8: ...INTENTIONALLY BLANK PAGE 907879 AP1198 6 PRINTED IN U S A Courtesy of CraneMarket com...
Page 17: ...PRINTED IN U S A 15 907879 AP1198 41 34 29 7 29 34 41 SAFETY 7 Courtesy of CraneMarket com...
Page 18: ...907879 AP1198 16 PRINTED IN U S A 3 15 1 4 15 1 3 3 4 SAFETY Courtesy of CraneMarket com...
Page 27: ...PRINTED IN U S A 25 907879 AP1198 THIS PAGE INTENTIONALLY BLANK Courtesy of CraneMarket com...
Page 63: ...Notes PRINTED IN U S A 61 907879 AP1198 Courtesy of CraneMarket com...
Page 66: ...663 Hydraulic Schematic 907879 AP1198 64 PRINTED IN U S A A Courtesy of CraneMarket com...
Page 67: ...663 Hydraulic Schematic PRINTED IN U S A 65 907879 AP1198 A Courtesy of CraneMarket com...
Page 70: ...Load Zone Charts 663 Winch Boom 907879 AP1198 68 PRINTED IN U S A Courtesy of CraneMarket com...
