AC 12G Crawler
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=169640
Printed Date: 28 Apr 2024 at 5:44pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC 12G Crawler
Posted By: Redd00n
Subject: AC 12G Crawler
Date Posted: 31 Mar 2020 at 5:10am
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Hi, , I am currently having issues with a AC 12G (I think) dozer. S/N 12 G-394. Machine starts and runs, all hydraulic functions work (blade and ripper) yet has issues driving. Machine hardly moves when in gear and any load put on by the blade or slight incline the machine will stop moving. Drive shaft from rear of engine to transmission turns in neutral and then stops when machine stops. Transmission oil is full.s Machine has a power shift transmission with 2 foot brakes and one pedal on the right with a “M” on it. Any thoughts on what the issue could be? |
Replies:
Posted By: CAL(KS)
Date Posted: 31 Mar 2020 at 7:06am
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check suction screens and verify pump pressure. screens likely plugged and or pump shot or sucking air. ------------- Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20 Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15 |
Posted By: DMiller
Date Posted: 31 Mar 2020 at 7:23am
| Also check your brake adjustments and linkage, brakes applied will divert oil to the steering clutches, does that driveshaft turn when brakes released and try to move? Bucket Function and trans are two separate systems. |
Posted By: Redd00n
Date Posted: 31 Mar 2020 at 2:44pm
| Yes, drive shaft turns when brakes released. Could you please tell me the location of the pump? Also what is the function of the pedal with “M” on it. Thank you. |
Posted By: DMiller
Date Posted: 31 Mar 2020 at 5:03pm
| M pedal is Main, or the Single ALL brake control. It is how you stop the machine instead of trying to turn with pedal steer. It Must return to full up or will have brakes applied, should also be a parking lock on it. |
Posted By: Lazyts
Date Posted: 31 Mar 2020 at 6:31pm
M is for Modulated clutch
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