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General| Brand | Volvo Penta |
|---|---|
| Model | 120S-B |
| Category | Engine |
| Language | English |
Outlines the manual's purpose and stresses the importance of reading safety information first.
Explains the meaning of WARNING, IMPORTANT, and NOTE symbols to ensure user safety.
Details the manual's coverage, required user knowledge, and modification policies.
Discusses warranty implications and safety requirements for using genuine Volvo Penta spare parts.
Sets out the workshop context, emphasizing safety and best practices for repairs.
Stresses using specified tools and chemicals safely and adhering to regulations.
Highlights the critical importance of preventing dirt ingress to avoid malfunctions.
Details specified tightening torques for fasteners, including preparation and general values.
Explains the process of tightening fasteners to a specified torque followed by an angular turn.
Provides guidelines on re-using lock nuts and the impact of Nylock® type on tightening torque.
Explains screw strength classifications and the importance of correct re-installation.
Covers various sealant types, their properties, and proper surface preparation for application.
Details RTV and anaerobic preparations, their characteristics, and common uses.
Warns about the formation of corrosive hydrofluoric acid from fluorocarbon rubber at high temperatures.
Provides safety guidelines for handling seals exposed to high temperatures, including PPE.
Lists and describes various special tools required for disassembly and assembly procedures.
Lists additional special tools with their part numbers and specific functions in repair tasks.
Continues listing special tools, detailing their part numbers and specific uses.
Lists precision measuring tools such as depth micrometers and dial gauges.
Details specific RTV, anaerobic, and polymer preparations, and water-resistant grease.
Illustrates the operational states of the MS2 reverse gear in forward and reverse positions.
Illustrates the operational states of the 120S sailboat drive in forward and reverse positions.
Details historical changes in 120S and 120S-C drives, including adapter and gasket updates.
Outlines historical revisions for 120S-B and 120S-D drives, noting material and color changes.
Describes revisions specific to the 120S-E drive, focusing on rubber mounting and gear treatments.
Guides on cleaning the drive exterior, draining oil, and removing adapter section screws.
Details separating the drive, saving components, and removing the rubber sleeve and adapter.
Explains removing the adapter plate, rubber sleeve, and O-ring from specific 120S models.
Instructs on removing the slipping clutch and checking it for any damage.
Details the process for disassembling the gear shift mechanism, including removing the dog and spring pin.
Guides on assembling the gear shift mechanism, installing seal rings, and the eccentric piston.
Covers installing new O-rings, springs, dogs, and adjusting the mechanism's screw.
Details disassembling the double bearing seal housing and rear bearing housing for MS2.
Guides on removing cooling water valve, rear cover, and outer casing from 120S drives.
Instructs on removing the bottom cover, O-ring, slipping clutch, and bearings from the MS2 reverse gear.
Details removing the cover, lock washer, spring washers, ball bearing, and gear wheel.
Guides on removing the sliding sleeve, vertical shaft, and bearing races using specified tools.
Details pressing out the gear wheel and bearings from the housing using specified tools.
Instructs on removing the circlip, taper roller bearing, and seal ring from the input bearing housing.
Guides on fixing the gear in a vise and disassembling the hook nut.
Details pressing out the input shaft and small/large outer bearing races using specified tools.
Guides on removing the roller bearing from the input shaft using a knife-type extractor.
Details pressing in the small and large outer bearing races into the bearing housing using tools.
Guides on placing the metal sheet on the drive shaft and pressing the large roller bearing on.
Covers placing the drive shaft and pressing the small roller bearing on, checking preload with spring balance.
Details screwing on a new nut and installing the seal ring with a mandrel.
Guides on pressing out the gear wheel and roller bearing from the upper bearing housing using tools.
Details pressing the upper roller bearing into the housing and installing the circlip.
Guides on putting shims on gear wheels and pressing the gear wheel into the housing.
Covers pressing the gear wheel into the housing and installing the upper bearing housing on the reverse gear.
Details removing the nut and disassembling the propeller shaft flange, including seal ring removal.
Guides on pressing out the output shaft, removing O-ring and ball bearing, and removing the seal ring.
Details removing the ferrule from the output shaft.
Guides on pressing out the shaft from the roller bearing and removing outer bearing races.
Details removing O-rings and the cooling water pipe from the bearing housing.
Guides on installing outer bearing races into the bearing housing using specified tools.
Details installing the cooling water pipe, O-rings, and applying sealant to the mating face.
Guides on pressing roller bearings onto the output shaft and drive shaft, checking preload.
Details screwing on a new nut and installing the seal ring with a mandrel.
Covers putting on O-ring, seal ring, installing propeller shaft flange, and tightening the nut.
Guides on disassembling the outer bearing race using a specific tool and removing shims.
Details pressing off small and large ball bearings from the slipping clutch using extractors.
Guides on pressing on bearings and calculating shim thickness for the slipping clutch.
Details pressing bearings onto gear wheels and calculating shim thickness based on stamped dimensions.
Guides on pressing the small bearing race into the housing using a specific tool.
Details installing the slipping clutch, measuring cover dimensions, and calculating shim thickness.
Guides on installing shims and bearing races, pressing them into the housing.
Details measuring flank clearance using a dial gauge and adjusting shims as needed.
Guides on applying marking dye, turning the shaft, and checking contact patterns.
Explains how to adjust shims based on marking patterns B and C for correct contact.
Details disassembling components after checking clearance and removing the outer bearing race.
Guides on removing extra shims, installing calculated shims, and pressing bearing races.
Guides on installing the lower roller bearing, ensuring correct alignment, and installing the circlip.
Details trying an initial shim thickness in the input bearing housing.
Guides on measuring gear flank clearance using a dial gauge and adjusting shims.
Details applying marking dye to gear wheels and checking the pattern for correct tooth contact.
Guides on reducing shims for pattern B or adjusting for pattern C, and checking contact patches.
Details measuring distance for spacer washers and assembling bearings, washers, and lock washer.
Guides on pressing the shaft and lock washer, and installing the sliding sleeve and needle roller bearing.
Details installing a new O-ring in the upper bearing housing and mounting the housing.
Guides on measuring distance between gear wheel and bearing, and installing washers.
Details installing the plain bearing on the shaft and installing the slipping clutch.
Guides on putting a new O-ring on the cover and screwing it down, ensuring oil drain alignment.
Details installing the output bearing housing with tested shims and fixing it to the housing.
Guides on installing the gear change mechanism in the reverse gear housing.
Details installing the dipstick, filling with oil, and referring to Technical Data for volume and viscosity.
Guides on cleaning the reverse gear, draining oil, and removing the angle gear.
Details disassembling the tubular shaft and pinion, saving shims.
Guides on removing the seal ring and disassembling the tubular nut with a hook wrench.
Details pressing out bearing races and using a claw extractor for the tubular nut.
Guides on pressing out the tubular shaft, crown wheel, and inner roller bearing.
Details removing the seal ring and bearing race from the cover using specified tools.
Guides on fixing the pinion, undoing nuts, and removing the roller bearing.
Details removing bearing races from the pinion housing and the needle roller bearing from the nut.
Guides on installing bearing races into the pinion housing using tools.
Details installing roller bearings, checking preload with a spring balance, and applying thread locking fluid.
Guides on installing a needle roller bearing and nut in the pinion nut, including tightening torque.
Details applying sealant and installing a new seal ring and bearing race.
Guides on applying sealant, installing seal rings, and installing bearing races in the cover.
Details putting the cover on the tubular shaft and pressing the roller bearing.
Guides on installing the tubular nut, checking preload, and adjusting shims for correct preload.
Details pressing the outer roller bearing onto the shaft using a sleeve.
Guides on installing the pinion, measuring flank clearance, and adjusting shims.
Details checking the marking pattern and adjusting crown wheel/pinion positions based on the pattern.
Guides on installing the pinion and a new O-ring, checking tightening torque.
Details installing the tubular shaft with a new O-ring and installing a new seal ring.
Guides on assembling the angle drive and reverse gear with a new O-ring.
Guides on cleaning the drive, removing propeller, drain plug, separating housings, and removing gasket.
Details fixing the housing in a fixture and removing the shaft nut using tools.
Guides on removing the zinc ring and socket cap screws from the bearing housing.
Details locking the pinion nut, unscrewing it, and removing the pinion.
Guides on disassembling bearing races from the gear housing using specified tools.
Details installing a tool to press the vertical shaft up and removing loose needles.
Guides on removing roller bearings and the ferrule from the vertical shaft.
Details installing a new ferrule, roller bearings, and the nut onto the vertical shaft.
Guides on removing front and rear roller bearings and the gear wheel from the propeller shaft.
Details pressing out seal rings and the outer bearing race from the rear bearing housing.
Guides on pressing the gear wheel and installing the front roller bearing onto the propeller shaft.
Details calculating shim thickness based on dimensions and installing shims and bearings.
Guides on measuring distances and calculating shim thickness for the rear bearing housing.
Describes an alternative shimming method by making the outer bearing race flush with the housing.
Guides on installing new seal rings and O-rings in the bearing housing, applying sealant.
Details assembling the outer bearing race and installing calculated shims into the bearing housing.
Guides on checking propeller shaft pre-load using string and spring balance or torque wrench.
Details installing a new needle roller bearing with a special tool, noting transport shield.
Guides on installing bearing races and the vertical shaft, including pinion and nut.
Guides on measuring flank clearance with a dial gauge and adjusting shims or tightening nuts.
Details adjusting tools, applying marking dye to gear wheels, and turning the shaft.
Guides on installing the propeller shaft, turning it, and braking it strongly.
Guides on disassembling the propeller shaft, checking gear tooth marking patterns, and adjusting shims.
Explains adjusting shims for displaced marking patterns and its effect on flank clearance.
Explains adjusting shims for displaced marking patterns and its effect on flank clearance.
Guides on checking end float, installing spacer rings, and measuring distances for shimming.
Guides on measuring gasket thickness and flange height for shim calculation.
Details putting the rubber sleeve on the housing and installing the cooling water tap.
Guides on installing the adapter section and bracket, tightening screws.
Details installing O-rings, checking slipping clutch, and fitting housings together.
Guides on measuring gasket thickness and flange height for shim calculation.
Details putting the rubber sleeve on the housing and installing the cooling water tap.
Guides on installing O-rings on the adapter section and slipping clutch.
Details fitting gear housings together, applying grease, and installing screws with washers.
Guides on securing screws with locking wire and installing a new zinc ring.
Details changing the oil drain plug gasket, soaking it, filling with oil, and checking level.
Guides on pressure testing the drive for leakage using special tools and checking pressure retention.
Provides information on sanding, priming, painting, and avoiding painting protective anodes.
Lists drive and reverse gear type designations and their gear ratios.
Provides pre-load specifications for various bearings including input, output, and shaft bearings.
Details recommended oil grades, viscosities, and volumes for different drive models.
Lists specific tightening torques for various components of MS2 reverse gears and drives.
Lists specific tightening torques for components of 120S, 120S-B, -C, -D, -E drives.
A blank section for logging service bulletins by group, number, date, and reference.
An empty section for user notes and comments.
A form for users to provide feedback and comments on the manual.
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