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Assembly Section 2-14
ASSEMBLY
INSTALLING O-RING FITTINGS
Installing straight, 45 degree and 90 degree O-ring fittings requires that the O-ring,
washer and nut (A) be up against the swivel body (B). Insert the swivel and turn in until
the swivel is pointed in the right direction and O-ring contact is made. Hold swivel in set
direction with a wrench and turn the O-ring nut away from the swivel body and carefully
tighten.
INSTALLING NATIONAL PIPE FITTINGS
Whenever installing a pipe fitting, wrap the threads clockwise (looking at the end) with
teflon tape. In this way, the tape will be tightened when installed. NOTE: It is not
necessary to tape O-ring fittings, or those installed in swivels.
FRONT PUMP MOUNTING
Install the pump mounting bracket on the front of the tractor with cap-screws and
lock-washers as shown in the parts section illustration. DO NOT tighten fasteners at
this time.
Thread the pump drive shaft into the crankshaft adapter.
Slide the splined drive shaft coupler onto the pump drive shaft. Install the pump onto
the mounting bracket. NOTE: the pump is offset to one direction, the pump should be
installed with the offset side on top. Install hardware for securing pump to the pump
mount, DO NOT tighten.
Install pump and align so that splined coupling can be moved (FREE PLAY) back and
forth by hand. Rotate coupler and check free play every 1/4 turn. Tighten pump
mounting bolts in succession rechecking for spline coupling free play. Remove the
pump mounting bracket bolts one at a time and apply a tread locking agent. Tighten
these bolts in succession, again checking for free play in the drive shaft. After all bolts
are torqued, the end play on the drive shaft should be 1/16” to 1/8”, and coupler should
move freely with hand pressure. If end play is less than 1/16”, grind the end of the shaft
to achieve the proper end play. If there is more than 1/4" of end play, return the shaft with
specifications for a longer shaft.
CAUTION: DO NOT START THE TRACTOR UNTIL ALL HOSES ARE
ATTACHED, TANK IS FILLED WITH PROPER OIL AND BALL VALVES ARE OPEN!
STARTING AT THIS TIME WILL CAUSE SERIOUS DAMAGE TO THE PUMP.
FILLING HYDRAULIC RESERVOIR
Refer to the maintenance section for filling specifications and hydraulic oil
requirements.
NOTE: Starting or running your Tiger mower before filling reservoir will
cause serious damage to hydraulic pump.