SECTION 31 - IMPLEMENT POWER TAKE-OFF (PTO) - CHAPTER 4
31-2
SET-UP GEARBOX
The units are shipped from the factory with the PTO
driveline configured for 540 PTO operation. In this
mode, the 540 RPM primary PTO shaft, 1, connects
to the 21 spline gearbox shaft, 2, and power flows
through the gearbox to step up the output to the
secondary PTO shaft to 1000 RPM.
The output shaft of the gearbox also extends out the
front of the gearbox. For 1000 RPM PTO operation,
the 1000 RPM PTO primary shaft connects to the 6
spline end of the output shaft, 3, to provide a direct
drive to the secondary driveline.
IMPORTANT: The gearbox must be removed and
inverted for 1000 RPM operation to properly align the
PTO shaft with the tractor, and to prevent the PTO
shaft from pulling apart over rolling terrain.
A3657-08
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2
3
1
To Convert Step-up Gearbox for Different PTO
Speed
1. Remove front PTO shield by removing two cap
screws and cupped lock washers at 1. Remove
the existing primary shaft from the gearbox by
removing the cap screw and locknut at 2.
A3657-07
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2
2
2. Squeeze the sides of the rear PTO shield
together until they slide off retaining pins; pull the
shield firmly downwards off upper retaining pin to
remove it.
3. Remove the two cap screws, 1, and locknuts
clamping the secondary PTO shaft to the
gearbox output shaft, and slide the PTO shaft off.
IMPORTANT: The secondary PTO shaft is very
heavy and awkward; use caution not to drop the shaft
assembly as personal injury or damage to the CV
joint may result.
4. Remove the rear PTO shield mount by removing
two cap screws, flat washers, cupped lock
washers and nuts at 2.
1411/3-16
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