Driveline Length Check - Alamo Bush Hog BH300 Series Operator's Manual

When attaching the Implement input driveline to the Tractor PTO, it is important that the
connecting yoke spring activated locking collar slides freely and the locking balls are seated
securely in the groove on the Tractor PTO shaft. Push and pull the driveline back and forth
several times to ensure it is securely attached. A driveline not attached correctly to the
Tractor PTO shaft could come loose and result in personal injury and damage to the
Implement.
IMPORTANT: Scan this QR Code with your smart phone to link to the ADMA
Driveline Safety Manual for more information on the safe use of a driveline during
normal operation and maintenance. Or type in your internet browser the following
web address: www.algqr.com/dme

7.1 Driveline Length Check

Before operating the Implement, check to make sure the Implement input driveline will not
bottom out or become disengaged. Bottoming out occurs when the inner shaft penetrates
the outer housing until the assembly becomes solid-it can shorten no more. Bottoming out
can cause serious damage to the Tractor PTO by pushing the PTO into the Tractor and
through the support bearings or downward onto the PTO shaft, breaking it off. A broken
driveline can cause personal injury.
1. Raise and lower cutter to determine position
with shortest distance between the tractor PTO
shaft and gearbox input shaft. Shut down tractor
PTO shaft and gearbox input shaft. Shut down
tractor leaving cutter in position of shortest
distance. Securely block cutter in position.
2. Pull driveline apart. Attach outer section to
tractor PTO shaft. Pull on driveline section to be
sure that yoke locks into place.
3. Hold driveline sections parallel to each other to
determine if too long. Each section should end
approximately 3" short of reaching universal
joint shield on opposite section. If too long,
measure 3" back from universal joint shield and
mark on opposite section.
4. Do this for both sections.
5. Raise and lower cutter to determine position
with greatest distance between PTO shaft and
gearbox input shaft. Shut down tractor leaving
cutter in position of greatest distance. Securely
block cutter in position.
BH300 Series 12/21
© 2021 Alamo Group Inc.
OPERATION
(S3PT-17)
Ops-0009-MISC
(S3PT-18)
Operation Section 4-15