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Home >> Plymouth >> 1989 >> Colt Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.5L 4-CYL - VIN [X] & 1.6L 4-CYL - VINS [Y,Z] >> Lubrication >> Oil Pump & Front Cover >> Disassembly & Inspection

Disassembly & Inspection

  1. Remove rear cover. Note direction of gear installation. Mark direction of gear installation for reassembly reference.
  2. On 1.5L models, check outer gear-to-cover and outer gear tooth-to-crescent clearance. Check inner gear-to-crescent clearance. Place straightedge across front cover housing and measure gear end play clearance between each gear and straightedge.
  3. On 1.6L models, check clearance between tip of gear teeth and front cover. Place straightedge across front cover housing and measure gear end play clearance between each gear and straightedge.
  4. On all models, check pressure relief valve for freedom of movement in bore and relief spring tension and free length. Replace components if not within specification. See OIL PUMP SPECIFICATIONS  table.
OIL PUMP SPECIFICATIONS

Application In. (mm)
1.5L
Gear End Play .0016-.0039 (.041-.099)
Inner Gear-to-Crescent .0083-.0134 (.211-.340)
Outer Gear-to-Case .0039-.0079 (.099-.201)
Outer Gear-to-Crescent .0087-.0173 (.221-.439)
Relief Valve Spring
Free Length 1.835 (46.61)
Spring Pressure 13 lbs. @ 1.579 (6 kg @ 40.11)
1.6L
Gear End Play
Drive Gear (1) .0031-.0055 (.079-.140)
Driven Gear (1) .0024-.0047 (.061-.119)
Gear Tip-to-Body Clearance
Drive Gear (1) .0063-.0083 (.160-.211)
Driven Gear (1) .0051-.0071 (.129-.180)
Relief Valve Spring
Free Length 1.835 (46.61)
Spring Pressure 13.4 lbs @ 1.579 (6.1 kg @ 40.11)
(1) Wear limit is .0098" (.249 mm).