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Tag: HEMTT

M870A3 Semitrailer: Retrofit Kit for M983A2/A4 HEMTTs
January 17, 2023 — This article initially appeared in PS 720 (Nov 12), p. 61. If no power is supplied to M870A3 semitrailer ABS ECU or service lights when hooked to an M983A2 or M983A4 LET tractor truck you may need to install an electrical system retrofit kit. Read on…... MORE

Tactical Vehicles Year-in-Review: New and Updated NSNs Captured in 2022
January 12, 2023 — Updated or new NSNs are a challenge to keep up with. Here’s a list that PS captured in 2022 for tactical vehicles and equipment. Get them here…... MORE

HEMTT A4-PLS A1-HET A1: Engine Cranks but Won't Start
January 10, 2023 — There’s a possible issue with the C15 and C18 engine on certain vehicles cranking but not starting due to a damaged engine cluster gear. Here’s what you need to know…... MORE

HEMTT: Parking Brake Problems? Check Exhaust Port
September 7, 2022 — Parking brake problems with the HEMTT could potentially be caused by a clogged exhaust port at the end of the parking brake valve exhaust hose which will cause the parking brake to fail. Read about it here... MORE

M1120A2 HEMTT: NSN for Hook Arm Cylinder Assembly
August 25, 2022 — The hook arm cylinder assembly for M1120A2s was replaced by the M1120A4’s. To get the newer assembly, use NSN 3040-01-642-5340... MORE

M983A4 LET HEMTT: Missing MCRS Winch Control Kit Procedures
December 7, 2021 — Maintainers, if you have an M983A4 light equipment transport (LET) HEMTT, there’s info missing from TM 9-2320-326-13&P (Sep 20) and TM 9-2320-341-10 (Sep 20). Get the info here... MORE

M978A2/A4 HEMTT: Bent Bracket Blocks Manual Control
November 16, 2021 — Dear Editor, please let PS Magazine readers know that a support bracket underneath the M978A2/A4 HEMTT tankers can interfere with the manual control (MC) V1 emergency valve if the bracket gets bent. Read the scoop here... ... MORE

HEMTT A4: Don’t Panic over Hull Cracks
June 17, 2021 — Maintainers, if you’ve done a visual inspection of your HEMTT A4 truck and discovered hull, cab or foot well cracks, don’t panic! These cracks are cosmetic only and don’t affect the safety or function of the truck. We've got the info you need... MORE

M139 Volcano: Hand Control Unit (HCU) Replaced by New HCU Cable Set
June 3, 2021 — If you plan to use your unit’s M139 Volcano on HEMTTs, you need to know about a major change to the hand control unit (HCU). The Volcano’s HCU has two (2) NSNs. Both are being replaced by a new HCU cable set, NSN 1095-01-689-2286... MORE

HEMTT, PLS: Put a Stop to Stop Bolt Woes
May 13, 2021 — Do you have a HEMTT M1120A4 LHS or PLS M1075A1 truck? If you do, then you know the enhanced-container handling unit (E-CHU) rear slider positive stop bolts can sometimes get damaged and even sheared off, leading to maintenance downtime. Read on for an optional fix... MORE

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