A light tower that goes dark mid-shift does not just slow your crew down. It can shut down an entire jobsite, trigger contract penalties, and eat up hours chasing parts from multiple suppliers. Stocking the right spares before a failure happens is the simplest insurance a contractor can buy. Below are the parts that wear out, fail under load, or get damaged most often on Multiquip light towers, including the LT12D, LT12DAB, LT6K, and related models.
Water Pump
The water pump keeps coolant circulating through the engine. When the impeller wears or the seal fails, coolant flow drops and the engine overheats fast, especially during long overnight runs. On diesel-powered towers running heavy hours, inspect the pump at every major service interval and replace it at the first sign of leaking or bearing noise. Catching a failing pump early prevents warped cylinder heads and far more expensive repairs.
- Shop Water Pump (MPN: 6584438), fits LT12D50B, LT12DAB, LT6K, LT6KV, lt12D, lt12D50sa
- Shop Water Pump LT-12 (MPN: 145016474), fits lt12D
Muffler (Lombardini, Without Guard)
The muffler takes constant heat cycling and is exposed to physical damage on active jobsites. Rust-through, cracked welds, and impact damage from debris are common failure modes. A damaged muffler raises exhaust noise to unsafe levels and can violate local noise ordinances on night-work sites. Replacement is straightforward, but only if you have the part on the truck. Keep one in your service inventory if your towers run hard in rough conditions.
- Shop Lombardini Muffler (MPN: 5460450), fits LT12D50B, LT12DAB, LT6K, LT6KV, lt12D, lt12D50sa
Alternator
The alternator on a light tower does double duty: it charges the starting battery and supports the electrical load of the lighting system. Worn brushes, failed bearings, or a faulty voltage regulator will cause output to drop or cut out entirely. If your tower starts throwing low-voltage warnings or lights begin to dim and flicker, test the alternator before assuming the problem is in the ballasts. Replacement alternators are not always easy to source locally, so having one staged saves real time.
- Shop Alternator LT-12 (MPN: 185046160), fits lt12D
Ballast / Transformer
The ballast regulates the electrical current that strikes and sustains the arc in metal halide lamps. Ballasts fail from heat buildup, moisture intrusion, and simple age. A failed ballast takes out one or more lamps completely and is often mistaken for a bad bulb. If swapping a lamp does not fix the problem, the ballast is the next part to check. Two versions are available depending on your tower's voltage configuration.
- Shop Ballast/Transformer (MPN: M1000120AC5M), fits lt12D
- Shop Ballast/Transformer 230V 50Hz (MPN: 29798), fits LT12D50B, LT12DAB, LT6K5, lt12D50sa
Lift Pump
The lift pump moves fuel from the tank to the injection system. A weak or failing lift pump causes hard starting, rough running, and eventually a no-start condition that looks like an injection problem until you trace it back to the pump. On towers with high hours, the lift pump is a logical preventive replacement during any major engine service rather than waiting for a failure in the field.
- Shop Lift Pump LT12 (MPN: 130506290), fits lt12D
Upper Radiator Hose
Radiator hoses degrade from the inside out. The rubber softens, collapses under suction, or develops cracks that weep coolant under pressure. By the time you see coolant on the ground, the engine has already been running hot. Inspect hoses at every oil change. A replacement hose costs a fraction of what an overheated engine costs to repair, and it takes minutes to swap out.
- Shop Upper Radiator Hose LT-12 (MPN: 3483H034), fits lt12D
Timing Belt (Lombardini LDW-1003)
The timing belt controls the precise relationship between the crankshaft and camshaft. On Lombardini LDW-1003 engines, this belt has a defined service life and must be replaced on schedule, not when symptoms appear. A snapped timing belt means an immediate no-start and possible internal engine damage. Check your service manual for the replacement interval and do not push past it.
- Shop Timing Belt Lombardini LDW-1003 (MPN: 2440338), fits LT12D50B, LT12DAB, lt12D, lt12D50sa
Order Your Multiquip Light Tower Parts from CCE Industries
CCE Industries is a stocking Multiquip parts dealer with the inventory to support your fleet. Whether you are building a preventive maintenance kit or chasing down a specific failure, our parts team can help you get the right part matched to your serial number and model. Order online or reach out directly through our contact page to confirm fitment before you buy.
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