Name: M.W.M 645 OEM Air Starter Replacement /Upgrade
Brand: Ingersoll Rand
SKU: M.W.M-645-AIR-STARTER

M.W.M 645 OEM Air Starter Replacement /Upgrade

Manufacturer: Ingersoll Rand

Guaranteed 100% Authentic

Made in the USA

Condition: New

*Rebuilt Models Have the letter "R" at the end of their model number

SKU:

M.W.M-645-AIR-STARTER

Description

Description

Ingersoll Rand air starters for the MWM 645. The MWM 645 is a 6-cylinder engine of 231 liters (14,096.3 cu in). Our Air Starter Model Finder, built from Ingersoll Rand application data, recommends the ST1099CP03R25, an ST1000 series turbine starter, on an SAE No. 3 flange with a right-hand pinion (11 teeth, 6/8 pitch). The finder lists 3 starter configurations for this engine; all are shown below.

Recommended Starters for the MWM 645

Configuration 1: SAE No. 3 flange, pinion R31

Choice	Ingersoll Rand starter	Type	Supply pressure	Max power	IR diesel rating
Recommended	ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	ST799GCDP03R31	ST700 series turbine	30-90 psi	66 hp (49 kW) at 90 psi	Up to 320 L

Configuration 2: SAE No. 3 flange, pinion R31

Choice	Ingersoll Rand starter	Type	Supply pressure	Max power	IR diesel rating
Recommended	2 x ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	2 x ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	ST799GCDP03R31	ST700 series turbine	30-90 psi	66 hp (49 kW) at 90 psi	Up to 320 L

Configuration 3: SAE No. 3 flange, pinion R31

Choice	Ingersoll Rand starter	Type	Supply pressure	Max power	IR diesel rating
Recommended	2 x ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	2 x ST1099CP03R25	ST1000 series turbine	30-90 psi	68 hp (51 kW) at 90 psi	Up to 320 L
Turbine option	ST799GCDP03R31	ST700 series turbine	30-90 psi	66 hp (49 kW) at 90 psi	Up to 320 L

Why These Starters Fit

Ingersoll Rand rates the ST1000 for diesel engines up to 320 L, so the 231 L 645 sits within its range.

Flange, Rotation and Pinion

Flange: SAE No. 3. Rotation: right-hand. Pinion: code 25, 11 teeth, 6/8 pitch, 20° pressure angle.

Engine builders change flywheel housings, ring gears and rotation between applications and serial ranges, so match the flange, rotation and pinion on your existing starter's nameplate before you order.

Air Supply

The ST1099CP03R25 runs on 30-90 psi and uses 1240 scfm (585 L/s) at maximum power. It is rated for compressed air or natural gas. The Model Finder pairs it with the ST1000-267-24 inlet strainer, which keeps scale and debris out of the motor.

Other MWM Engines of Similar Size

MWM G232V8 (11.8 L): ST400C01R77
MWM TD232V8 (11.8 L): ST400C01R77
MWM 616 (17.6 L): ST400C01R77
MWM 604B (26.4 L): ST400C01R85
MWM 626 (34.8 L)
MWM 620 (35.2 L): ST500
MWM 440K (67.2 L)
MWM 628 (76.2 L)
MWM 632 (100.2 L): ST1099CP03R25
MWM 441D (134.4 L)

MWM 645 Air Starter FAQ

What air starter fits the MWM 645?

The Model Finder recommends the ST1099CP03R25. Alternatives are ST799GCDP03R31. Confirm the flange, rotation and pinion against your current starter before ordering.

Can the ST1099CP03R25 run on natural gas?

Yes. Ingersoll Rand rates the ST1099CP03R25 for compressed air or natural gas. On gas, pipe the exhaust away to a safe location.

Can I replace an electric starter on the 645 with an air starter?

Air starters mount on standard SAE flanges, so they are often used in place of electric starters where batteries, sparks or cold starts are a concern. See air vs. electric starters, and call us with your engine serial number so we can confirm the flange, pinion and air supply.

How do I confirm the right starter?

Send us the full model number from your existing starter's nameplate, or the engine make, model and serial number. Engine builders change ring gears and flywheel housings between serial ranges, so we confirm fit before quoting.

Need a Starter for Your 645?

AirStartersDirect.com is a factory-authorized Ingersoll Rand distributor operated by Zampini Industrial Group, which has supplied engine starting equipment since 1987. Call 1-800-353-4676 or request a quote with your engine make, model and serial number.

Sources: AirStartersDirect Air Starter Model Finder (Ingersoll Rand application data) and the Ingersoll Rand Engine Starting Systems catalog.

Ingersoll Rand pneumatic air starters can replace any factory mounted starter engine and simultaneously offer a variety of helpful benefits. Compared to conventional electric starters, a pneumatic air starter occupies considerably less space as it is run by air. Pneumatic air starters are also considered safer in hazardous environments as they do not produce electrical sparks like electric starters sometimes do, thus eliminating the risk of igniting flammable materials that may be present.

Ingersoll Rand air starters have significantly more torque than electric starters of equivalent size, and that allows even a small air starter to start very large engines and turbines. In addition, electric starters as well as their wiring may become excessively hot in the event that it takes longer than expected to start the engine, while air-starters can be run for as long as their air supply lasts. Turbine starters provide even more torque and tend to be simpler, and therefore are a natural fit for turbine engines. Turbine air starters are utilized extensively on large turbofan engines commercial and military aircraft; as well as marine ships and vessels, trains, heavy construction equipment, and more.

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