Reversibility - Tennant ATLV 4300 Service Manual

Series 26 - Model 26000 Single Gear Pumps

Reversibility

Changing Input Rotation of Pump
1 Place pump in a protected jaw vise with shaft end up.
Remove the eight cap screws.
2 Remove front plate, noting orientation of drive shaft
through bearing in reference to the backplate.
3 Notice the location of the open side of wear plate and
remove wear plate.
Switch drive gear and idler gear within gear pockets. Do
4
not flip idler gear end for end.
Note: Gear housing body and backplate do not need altering.
5 Re-install wear plate into gear pockets over the gears with
seal and backup gasket up. (Same orientation as removed)
6 Front plate disassembly and assembly:
- Thread 3/8 UNC threaded bolt into plug cavity. Start
with fingers, then place bolt head in vise and turn front
plate to engage threads 2-3 turns.
- Holding bolt in vise, tap front plate with rubber
hammer to disengage plug .
- Remove plug from bolt.
- Install plug in the other casting cavity and tap flush
with rubber hammer. Note L or R at bottom of cavity.
Open for
40
lefthand
Plug
rotation
L
R
- Ensure that bearing drain holes are free of debris.
- Note proper placement of o-ring in groove of front
plate.
Open for
40
righthand
Plug
rotation
L
R
7 Hold o-ring in groove of front plate with petroleum jelly.
Reassemble front plate over drive shaft end, being careful not
to damage shaft seal.
8 Torque 8 cap screws 34 to 38 N•m [25 to 28 lbf•ft].
9 Lubricate gears and mating surfaces with hydraulic oil
through ports.
10 Rotate shaft (manually) to ensure proper assembly of
components.
7