Parker Chelsea 890 Power Take Off for Allison Transmission

Description

Chelsea 890 Series was designed to fit the Allison 3000/4000 Series transmissions. This design moves the PTO/Pump mounting flange to the rear of the transmission for better pump clearance. All 890s have Wet Spline outputs for longer pump spline life.

Chelsea 890 Power Take Off

The 890 Series Power Take-Off (P.T.O.) is mounted between the transmission and the frame rail of the truck. It mounts like a standard side mounted P.T.O. with an additional bracket at the rear of the transmission. It places the output of the P.T.O. beyond the rear of the transmission where there is extra space. The 890 Series is a single unit, not a P.T.O. with an extension, the main shaft is one piece eliminating the input splines between the P.T.O. and the shaft extension. The clutch has been moved to the rear of the unit to allow the housing and gear section to tuck in tightly to the transmission. The output utilizes a wet spline which eliminates fretting problems.

XS = Class “C” 2 & 4-Bolt Pump Mount
XK = Class “B” 2 & 4-Bolt Pump Mount
AF = Class “B-B” 2 & 4-Bolt Pump Mount
XY = DIN 5462 Pump Mount
AZ = Class “B” 2 & 4-Bolt Pump Flange, Class “C” Shaft
XV = 1-1/2″ – 10 Spline Shaft w/1410 Flange
AB = 1-1/2″ – 10 Spline Shaft w/DIN 120 Flange
AC = 1-1/2″ – 10 Spline Shaft w/DIN 100 Flange

Available gear ratios are:

A = 24/40
B = 25/39
C = 26/38
D = 27/37
E = 29/35
F = 31/33