DRIVE CHAIN TENSIONING
The #2082 Drive Chains (#50 Roller Chain) are
tightened by increasing the center distance
between the movable #2065 Rear Axle and the
fixed #2430 Sprocket & Shafts.
Begin your Drive Chain Tensioning procedure by
driving Crawler onto a firm, level surface. Shut off
Engine and dismount...do not lock Main Drive
Clutch/Brake Lever. [Though not absolutely
necessary, it's extremely helpful in the following
procedure to block your Crawler up and remove
its Tracks...see Track Removal section of this
Manual for instructions].
Raise Seat Latch and rotate Seat/Cover Assembly
fully rearward and hit its stop. Remove the
#2476R & #2476L Right & Left Chain Guards from
left & right side of Crawler (be careful not to lose
the special #2005 Washers).
Do a thorough cleaning of the Chains and mating
sprockets with a stiff brush. The sprockets and
their mating Drive Chains must be clean to give
proper chain adjustment. [You may want to
remove the Drive Chains and soak in penetrating
oil overnight if they seem stiff].
From inside the Crawler's body, loosen (but do not
remove) the nuts on the twelve 3/8" x 1" Carriage
Bolts (six on each side of Crawler) that secure the
#2033 Supports (one on each side of body) which
hold the #2065 Rear Axle. [TIP: A socket wrench
works best for this step].
To tighten the Drive Chains, start rotating
clockwise the Locknut on the end of each #2038
Pull. To draw Rear Axle back evenly, turn one
Locknut 1/4 turn, then go to the other side and
tighten the other Locknut 1/4 turn...use this back
and forth procedure until both Drive Chains are
reasonably tight...not "bow-string" tight, but not
slack either.
NOTE
: While doing the above procedure,
make sure you rotate each #2050B Sprocket a
full revolution after each 1/4 turn of its
respective Locknut. This will determine if
there is a slight "high spot" in one of the
mating sprockets...if so, use the "high spot"
location for your point of tightening.
When satisfied that both Drive Chains are
tightened evenly, retighten the twelve 3/8"
Carriage Bolts holding the #2033 Supports. Using
SAE 30 motor oil, thoroughly lubricate your Drive
Chains at this time.
Replace the #2476R & #2476L Right & Left Chain
Guards using original Cap Screws, Nuts and
#2005 Washers. Close Seat/Cover Assembly and
2476L
2033
2038
2038
2005
