Description

Denso 3A188, 3A224, 6C300, 6C500, 2M110 Service Manual – Factory A/C Compressor Specs

You are staring at a compressor that could be a swash plate, wobble plate, sliding vane, through vane, or scroll type – and your aftermarket manual says “torque to spec” without telling you which spec. That is how you snap a bolt or blow a seal on a Friday afternoon. The Denso 3A188, 3A224, 6C300, 6C500, 2M110 Service Manual ends that guessing. This is the same binder Denso ships to dealerships, and it comes to you as a clean 59-page PDF.

Compressor Types and Identification

Page 1 walks you through the compressor outline and the type-number system. Denso uses a code that tells you displacement, rotation direction, and series. Without this manual you are decoding stamped numbers by guesswork. The section “How to Identify Type Number” shows exactly where to look on the housing and what each digit means. That alone saves you from ordering the wrong service parts for a 3A188 or a 6C500.

5 Compressor Mechanisms Covered – Swash Plate, Wobble Plate, Sliding Vane, Through Vane, Scroll

Each of the five fundamental designs gets its own chapter with exploded views and internal clearances. The swash plate section alone covers ten sub-types including the 10PA17C, 7SB16, and 6SE12. The wobble plate section addresses the 6CA17C. Sliding vane covers the SV07. Through vane gets three variants – TV10C, TV14SC, TV14EC. Scroll compressors include SC08C, ESC06E, SCS08C, SCS06C, and SCSA06C. Every assembly step references factory tolerances, not aftermarket approximations.

For the 2M110 model, the manual cross-references which swash plate family it belongs to, so you are not left hunting. The Manual Transmission of a truck might shift fine, but if the A/C clutch torque is wrong, the whole pulley assembly walks off the nose cone. You need the factory number from page 54.

Magnetic Clutch & DL Pulley: Torque and Construction

Chapter 3 dives into the magnetic clutch and the Resin DL pulley. The operating principle (page 53) shows how the armature plate engages – and more importantly, what happens when the air gap drifts out of spec. The “Transmission Torque” section on page 54 lists the actual breakaway and holding torques for each clutch size. You will not find that in a Haynes manual. The construction diagrams on pages 55–56 detail the Resin DL pulley features and how to inspect the clutch hub for wear. If you are replacing a clutch on a 3A224, that is where you live.

Who Needs This Manual

Home garage guys rebuilding a compressor on their own pickup. Shop owners who want their techs to stop splitting pulley halves because they used the wrong puller. Fleet mechanics who see six different Denso compressors a week and need a single source for all of them. This manual skips the theory and goes straight to the breakdown. If you are swapping a 6C300 into a truck that originally had a 2M110, you need the type identification to verify the mounting footprint before you order brackets.

Related Denso manuals worth having on the shelf: Denso TGN15, TGN16, TGN26, KUN15, KUN16 2004 Service Manual – OEM A/C Specs, Denso FIGHTER 6M60 2004 Service Manual – Factory Diesel Injection Guide, and Denso Avensis 2005 Service Manual – OEM Diesel Injection Specs.

Factory Specs vs. Aftermarket Documentation

Aftermarket manuals take a compressor – say a 10S15L – and write one generic torque value that “usually works” for all swash plates. That is how you get a wobble plate that binds because the bearing preload was off by 5 inch-pounds. This Denso service manual was written by the engineers who designed the parts. Every bolt and seal spec came from the same test stands that certified the compressor. No one else has the original print. If you are working on a vehicle equipped with a Manual Transmission, the clutch housing is separate from the compressor, but the A/C belt tension still has to match the pulley specification here.

Does this manual cover the 3A188 and 2M110 models specifically?

Yes. Both are listed in the compressor type identification section.

What torque values are listed in the manual?

Page 54 provides transmission torque for the magnetic clutch assembly – that includes the armature plate-to-hub torque, rotor-to-lock nut torque, and the breakaway torque for the clutch field coil. Values are given in foot-pounds and inch-pounds per Denso’s original test standards. The manual also covers pulley retention torque from the Resin DL pulley construction section. If you are rebuilding a 6C300 clutch, you need these numbers because the spec changes with clutch diameter. Using a “general” torque from a third-party site got a customer’s pulley separated at 60 mph last month. Do not guess.

Can I use this manual for a 3A224 or a 6C500?

Those models are covered under the same type-number system. The swash plate section includes the family they belong to.

Does the manual include wiring diagrams?

It does not. This is a mechanical service manual – it covers compressor disassembly, clutch construction, and torque specifications. Electrical schematics are not part of the 59 pages.

The 59-page PDF is ready to access. You get the exact same OEM document that Denso technicians use, not a reprint or compilation. No guesswork, no third-party shortcuts. If you are swapping a compressor, rebuilding a clutch, or just need to identify what type of Denso unit you have on the bench, this is the single source that gives you the factory answers. Access the Factory Manual and keep it on your tablet next to the torque wrench.