Name: McCormick CT28, CT36 Service Manual (incl. Wiring)
Author: McCormick

All 313 pages of this McCormick CT Series Service Manual zero in on two compact tractors: the CT28 and CT36, covering the S3L, S3L2, S4L, S4L2, I-HST, and I-MEC variants across both hydrostatic and mechanical transmission configurations. Inside, you get full wiring diagrams for both HST and mechanical tractor circuits, hydraulic schematics covering the complete lift, steering, and PTO valve circuits, page after page of exploded views across every major assembly, and a thorough troubleshooting section that walks through hard starting, fuel knock, low power, black exhaust smoke, and steering faults. Factory torque tables cover everything from cylinder head bolts to hydraulic housing fasteners; for example, torque the oil filter to 12 ± 1 N-m and set the down valve body spool clearance to 0.3–0.6 mm before sealing the control valve. No more chasing hydraulic gremlins through forum threads. Bookmarked and keyword-searchable: pull it up on your tablet at the machine and find the spec in seconds.

What's Inside This Manual

System	Pages	Key Topics
Introduction	1-3	How to Use This Manual, Exploded Views, Symbols, Definition of Locational Terms, Service Data, Dimensional Tolerances
General Information	4-9	Model Identification and Serial Number Location, Component Location (S3L/S4L Engines), Specifications, Performance Curves, Prime Power Output
Engine Overhaul and Inspection	10-69	Determining When to Overhaul, Compression Pressure Measurement, Cylinder Head, Rocker Arms and Rocker Shaft, Valve Springs, Valves, Valve Guides and Seats, Pistons, Connecting Rods, Crankshaft, Timing Gears
Cooling System	124-129	Schematic, Specifications, Water Pump, Thermostat, Radiator, Inspection
Lubrication System	130-133	Schematic, Specifications, Oil Pump, Oil Pressure Switch, Relief Valve, Inspection
Fuel System	134-151	Fuel Injection Pump (Test on Engine, Disassembly, Inspection, Assembly), Governor, Fuel Pump, Fuel Filter, Injection Nozzle, Schematic, Specifications
Air Inlet and Exhaust System	152-155	Schematic, Air Cleaner, Intake and Exhaust Manifold, Inspection
Engine Maintenance and Adjustments	156-169	Lubrication and Maintenance Chart, Engine Oil and Oil Filter, Valve Clearance, Fuel Injection Timing, Fuel System Priming, Idle RPM Setting, Injection Nozzle, Fan Belt
Engine Specifications, Tightening Torques and Special Tools	170-178	Engine Specifications, Tightening Torques, Sealants, Special Tools, Basic Engine Components, Lubrication / Fuel / Air Inlet Systems
Transmission	179-232	Main Gear (Center Case), Range Gear (Axle Case), Final Drive Shaft, Differential and Rear Axle, Schematic View, Running Speed, Clutch Disassembly and Assembly, HST Unit Disassembly and Assembly, HST Operation
Front Axle	233-248	Main Bolt Tightening Force, Knuckle Configuration, King Pin, Taper Bearing, Front Wheel Pinion and Differential, Pinion Center Distance Adjustment, Differential Assembly
Hydraulic System (3-Point Lift and PTO)	249-287	Main Specification, Hydraulic Pump, Independent PTO, Front Outlet Valve, Control Valve, Lifting / Neutral / Down Positions, Hydraulic Circuit (Mechanical and HST), Link Assembly and Disassembly
Steering System	249-287	Steering Unit, Steering Pump, Steering Cylinder, Relief Valve, Spool and Rotor, Rotor Shaft Disassembly and Assembly, Steering Troubleshooting
Electrical System	288-313	Starter Motor (Magnetic Switch, Brush Holder, Yoke, Armature, Pinion Shaft), Alternator (Rectifier Bridge, Stator, Slip Ring, Voltage Check), Glow Plug System, Key Shutoff Solenoid, Circuit Diagrams (HST and Mechanical Tractor)

Quick Reference Specifications

Specification	Value	Page
Knuckle arm liner (adjustment types)	0.1mm, 0.5mm	p. 234
Clearance between body and plate of spool (gap between down valve and plate)	0.3~0.6mm	p. 267
Upper link length	480 ~ 700 mm	p. 264
Lift rod length	430 ~ 540 mm	p. 264
Oil filter torque	1.2 ±0.1 kgf-m (8.7 ± 0.7 lbf-ft) [12 ± 1 N-m]	p. 175
Compression Ratio	22	p. 8
Valve Clearance (Inlet and Exhaust)	0.25 mm	p. 157
Fuel Injection Pressure (Standard)	140 kgf/cm²	p. 135
Crankshaft Pulley Nut Torque	17.5 ± 2.5 kgf-m	p. 175
Main Bearing Cap Bolt Torque	5.25 ± 0.25 kgf-m	p. 175
Fan Belt Deflection (under 10 kgf [98 N] force)	10 to 12 mm	p. 169
Thermostat Opening Temperature	82 ± 1.5°C	p. 125

Brand	McCormick
Model	CT28, CT36
Machine Type	Tractors
Manual Type	Service Manual
Language	English
Format	Searchable PDF (Digital Download)
Pages	313
File Size	21 MB
Wiring Diagrams	Yes
Hydraulic Schematics	Yes
Torque Specifications	Yes
Bookmarked / Indexed	Yes

McCormick CT28, CT36 Service Manual (incl. Wiring)

What's Inside This Manual

Quick Reference Specifications

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