Mitsubishi 4DQ7, S4S Diesel Engine Service Manual

$29.99

Fits Mitsubishi FD10, FD14, FD15, FD18, FD20, FD25, FD30, FD35A Forklift Trucks
Model: 4DQ7 | S4S
Serial: AF18B00001-49999 | AF18B50001-50100 | AF14C30001-49999 | AF14C50001-99999
147 Pages·8.5 MB·Scanned PDF·English·Print-Ready
  • ✓ Torque Specs
  • ✓ Bookmarks
Preview Sample Pages (PDF)
Add to Cart
Mitsubishi 4DQ7, S4S engine manual: procedures for removing, installing valve guides and checking valve face contact.
Mitsubishi 4DQ7, S4S Diesel Engine Service Manual
$29.99

Instant Download 24/7

  • Works on PC, Mac, tablet, and phone.
  • Download once, keep forever

 

Guaranteed Safe Checkout
Visa Mastercard PayPal Apple Pay Google Pay

Need factory teardown data for your Mitsubishi 4DQ7 or S4S diesel? This 147-page Mitsubishi 4DQ7, S4S Service Manual PDF covers both engine variants powering FD10, FD14, FD15, FD18, FD20, FD25, FD30, and FD35A forklifts. Inside: full disassembly, inspection, and reassembly procedures for the cylinder head, timing gears, pistons, crankshaft, and injection pump, plus troubleshooting charts covering everything from hard starts to abnormal exhaust smoke. You also get maintenance standards, clearance tables, and exploded views for every rebuild step. Torque the injection nozzles to 6 ± 1 kgf·m and pull the connecting rod caps down to 5.5 ± 0.5 kgf·m; the numbers are right there in the tightening torque tables. No more chasing specs through forum threads. Bookmarked PDF opens on any device; grab your tablet, walk to the engine, and start wrenching.

What's Inside This Mitsubishi 4DQ7, S4S Manual

SystemPagesKey Topics
Front Matter1-3Cover Page, Foreword, Table of Contents
Specifications4-5
Sectional Views6-204DQ7 Longitudinal Sectional View, 4DQ7 Transverse Sectional View, S4S Longitudinal Sectional View, S4S Transverse Sectional View, Performance Curves (4DQ7, S4S), Maintenance Standards
Maintenance Standards21-23Electrical System Maintenance Standards (Alternator, Cooling System Thermostat, V-Belt Tension), Tightening Torque, Tightening Torque S4S
Sealant Application Data24-30Tightening Torques for Major Components
Cylinder Head and Valve Mechanism31-45Disassembly, Inspection and Repair, Reassembly, Valve Clearance Inspection and Adjustment
Timing Gears, Camshaft and Oil Pan46-58Timing Gear Disassembly, Camshaft Inspection and Repair, Oil Pan Reassembly
Flywheel59-64Flywheel Disassembly, Flywheel Inspection and Repair, Flywheel Reassembly
Piston, Connecting Rods, Crankshaft and Crankcase65-82Piston and Connecting Rod Inspection, Crankshaft and Crankcase Reassembly
Engine Proper83-84Installing Main Bearings 4DQ7, Installing Pistons, Installing Crankshaft, Installing Main Bearing Caps
Oil Pump85-97Description, Reassembly
Oil Filter98-110Relief Valve, Water Pump, Thermostat, Fuel Filter (Disassembly and Inspection), Injection Nozzles (Disassembly, Inspection and Adjustment)
Injection Pump111-125Removal, Installation, Adjusting Injection Timing, Adjusting the Idling and Maximum Speeds, Starter (Disassembly, Inspection and Repair, Reassembly)
Electrical System126-131Alternator (Disassembly, Inspection), Heater Plugs (Inspection, Replacing Bearings, Holding Brush)
Workshop Theory132-136Suggestions on Disassembly and Reassembly (Oil Seals, O-Rings, Bearings, Lock Plates, Split Pins and Spring Pins), Testing the Compression Pressure
Troubleshooting137-145Troubleshooting Chart 1 (Engine Will Not Start, Engine Lacks Power, Abnormal Exhaust Smoke, Fuel System Complaints), Troubleshooting Chart 2 (Poor Fuel Supply to Injection Pump, Injection Timing, Poor Compression)
General Specifications146-147Engine Proper Specifications, Valve Timing, Starting System, Lubrication System Specifications, Cooling System Specifications, Fuel System Specifications, Injection Nozzles

Quick Reference Specifications

SpecificationValuePage
Oil drain plug4 ± 0.5 kgf·mp. 16
Oil filter1.5 to 2.0 kgf·mp. 16
Injection nozzle6 ± 1 kgf·mp. 16
Injection pipe nut2.5 to 3.5 kgf·mp. 16
Connecting rod cap5.5 ± 0.5 kgf·mp. 16
Water drain plug4.5 ± 0.5 kgf·mp. 17
Crankpin diameter (4DQ7) assembly standard57.945 to 57.965 (2.28129 to 2.28208) mm (in.)p. 71
Cylinder Head Tightening Torque118 ± 5 N·mp. 22
BrandMitsubishi
Model4DQ7, S4S
Machine TypeDiesel Engine
Manual TypeService Manual
LanguageEnglish
FormatScanned PDF (Digital Download)
Pages147
File Size8.5 MB
Serial RangeAF18B00001-49999, AF18B50001-50100, AF14C30001-49999, AF14C50001-99999
Wiring DiagramsNo
Hydraulic SchematicsNo
Torque SpecificationsYes
Bookmarked / IndexedYes