1984–1989 Toyota 4Runner Manual Factory Service Manual

• Four-PDF set totaling 1,539 pages: a 1,468-page 1988 Toyota Truck & 4Runner factory repair manual for RN50, RN55, RN61, RN66, RN70, and RN75 series, plus three dedicated transmission-overhaul articles.
• Covers in-vehicle troubleshooting and removal/installation for the 1988 truck and 4Runner, followed by bench disassembly, inspection, and reassembly of W46/W55/W56, G40/G57, G52/G53, and R150-family transmissions, with W58 and R154 applications included in the supplement tables.
• Distinguishes 2WD extension-housing and 4WD transfer-adapter builds, speedometer-drive arrangements, G52/G53 shift-rail layouts, and rear speed-sensor procedures on ABS-equipped W58 and R154 variants.
• Details the intermediate plate, input shaft, output shaft/mainshaft, countershaft, reverse idler gear, shift forks and rails, interlock pins, clutch hubs, synchronizer rings, bearings, sleeves, and snap rings, including final rotation, interlock, and shift checks.
• Provides exploded assemblies, gear-engagement and measuring-point figures, family-specific Toyota SST callouts, snap-ring selection tables, clearance and wear specifications, sealant requirements, and component-specific torque data.
• The factory volume also covers 22R, 22R-E, and 22R-TE engine systems, clutch, transfer, propeller shaft, axles and suspension, brakes, steering, body electrical, body, and air conditioning, with service-specification, standard-torque, SST/SSM, automatic-transmission hydraulic-circuit, and electrical-wiring-diagram appendixes.

Drivetrain and Transmission Walkthrough

The main volume is a ©1987 Toyota Motor Corporation publication for the 1988 model year. Its manual-transmission section opens with FIPG precautions, a basic hard-shift and jump-out troubleshooting chart, and vehicle removal and installation. Separate overhaul chapters cover W46/W55/W56, G40/G57, and R150 units. The three 19-, 25-, and 27-page supplements carry ©2008 Mitchell Repair Information Co., LLC, with technical illustrations credited to Toyota Motor Sales, U.S.A., Inc. They extend the bench-repair coverage to G52/G53 and broader R- and W-series applications.

Coverage follows the transmission application tables rather than one blanket model-year range. G52 is listed for 1985-1987 4WD Pickup and 4Runner, while G53 applies to 1985-1989 2WD and 4WD Van. The R-series article covers selected R151F, R150, and R150F Pickup, 4Runner, Van, and T100 configurations from 1987 through 1994, plus R154 Supra applications. The W-series article spans selected 1983-1994 W46/W55/W56/W58 applications in Pickup, 4Runner, Camry, Celica, Corona, Cressida, Supra, T100, and Lexus SC300 models. Exact year, drive type, and transmission code should be matched before parts or procedures are selected.

Bench work is organized around clutch-housing, extension-housing, or transfer-adapter removal; intermediate-plate teardown; shift-fork shaft, detent, and interlock service; input/output/countershaft extraction; component inspection; reassembly; and final shaft-rotation and shift checks. The 2WD units use extension housings and speedometer-drive components, while 4WD versions use transfer adapters and sleeve yokes. ABS-equipped W58 and R154 units add rear speed-sensor handling.

The Mitchell supplements concentrate on internal overhaul. Where listed, their lubrication and adjustment, basic troubleshooting, axle-service, and vehicle removal/installation references point to separate Mitchell articles rather than reproducing those procedures. For 1988 RN-series trucks and 4Runners, the included Toyota factory manual supplies in-vehicle troubleshooting and transmission removal/installation. The gearbox is heavy; securely support the vehicle and transmission before the crossmember or bellhousing is released.

Specification and Reference Data

Internal setup data receives extensive coverage. The tables cover input-shaft retaining snap rings; output-shaft front, rear, and rear-bearing snap rings; countershaft front-bearing rings; reverse-gear and fifth-gear rings; hub-sleeve rings; gear thrust and lateral movement; gear-to-shaft oil clearance; shaft runout; bearing-surface dimensions; synchronizer-ring clearance; shift-fork-to-hub-sleeve wear; and component-specific torque specifications. The W-series article separately identifies third-gear lateral-movement data for 1983-1992 and 1993-1994 builds.

Named figures include Engagements of 150F Manual Transmission Gears, Exploded View of Shift Forks & Shafts, the five-part Exploded View of Transmission Assembly, Identifying Output & Countershaft Measuring Points, Measuring Shift Fork & Synchro Ring Assemblies, and Sectional View of 5th Countershaft Gear & No. 3 Hub Sleeve. Tool callouts are family-specific: examples include Toyota SST or service-tool numbers 09313-30021, 09213-27010, 09213-31021, 09950-20017, 09312-20011, 09608-35014, and 09316-60010.

Several repair traps are made explicit. The intermediate plate is supported in the vise through bolts, nuts, and reversed washers; clamping the plate itself can damage the sealing surface. G52/G53 major joints use new gaskets, while R150 and W-series major housings use Three Bond 1281 FIPG, so sealing practice should not be transferred between transmission families. On W-series disassembly, the rear bearing roller must not contact the counter fifth gear and puller jaws must not load the shifting-key retainer. Reassembly also depends on correct inner-race orientation, synchronizer-slot alignment, staggered key-spring gaps, and snap-ring selection for minimum axial play.