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2440 cranking slow

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theoldtexasfarmer

12-14-2012 18:00:19

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Dubuque buildt,with delco starter is cranking hard.It has two new batteries and new heavy duty cables and even with a jumper it wont spin fast enough to start. So all that is left to check is the starter.Right? Is there something else to check before removing starter? How would I check out the starter? What would be better,having my starter rebuilt or just buy a rebuilt from Deere? I dont use this old tractor much,mostly just for feeding hay at one pasture so it needs to start even when its cold in s.e. Texas. Thanks

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Winchester1

12-16-2012 12:28:32

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

The others have pretty much covered it. The only other thing I can think of is to check your battery cables with an ohn meter. They can corrode behind the insulation where it can"t be seen creating excessive resistance.

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Tech 7

12-15-2012 07:53:58

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

Like B&D said run the end of the neg. cable to CAST not the tin on the firewall like original. I don't like the steering wheel technique, I lower the rockshaft then place the handle in raise while cranking. (poor mans destroker)

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Tx Jim

12-15-2012 09:13:08

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Re: 2440 cranking slow in reply to Tech 7, 12-15-2012 07:53:58

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I'll third relocating ground cable from rusty battery box to engine block. I curios how 3pt raising would be better on starter than moving steering wheel from side to side. De-stroking screw only cost about $15

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theoldtexasfarmer

12-15-2012 07:21:34

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

I tried turning steering wheel.Nothing.I will try rerouting the ground.This tractor is rusty as it is 35 years old and seldom sees a barn.I replaced the positive cable because the flat end was rusty and was sparking,but no improvement.I will need to see about load testing the batteries.I asume TSC charged them fully.Thanks for the answers.

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cannonball

12-15-2012 05:48:15

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

try this place for starter...have one on a 2840 works good...does your front pump have a pump unloader on it...it is on left side (if sitting in seat) and has a little tee screw if your pump has it..

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Tx Jim

12-15-2012 04:07:38

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Re: 2440 cranking slow in reply to Greenday, 12-14-2012 18:00:19

While trying to crank engine turn steering wheel rapidly from side to side. If this helps engine spin over faster then you need to install & use a hyd de-stroking screw.

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MSM

12-15-2012 04:04:16

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

Try turning the steering wheel while you are cranking it. You may have an internal hydraulic leak that is loading the pump making it hard to spin. If the tractor spins over fast enough to start,you can try and trace down the leak,or install a manual de-stroke valve on the hydraulic pump

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MSM

12-15-2012 04:04:10

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

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buickanddeere

12-14-2012 21:37:46

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

Run another chassis return cable from the batteries's common (-) point. Down to on of the starter mounting bolts. The (-) connection to the sheet metal isn't worth the time of day.

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teddy52food

12-14-2012 18:25:04

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Re: 2440 cranking slow in reply to theoldtexasfarmer, 12-14-2012 18:00:19

Have you load tested those new batteries? What is the amp draw and voltage at the starter when cranking?

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