In detail: do-it-yourself grand vitara hand-out repair from a real master for the site my.housecope.com.
Transfer case overhaul - general information
Overhaul of the transfer case is a difficult procedure to perform on your own. It involves the disassembly and correct reassembly of many small assemblies and components. It is necessary to accurately measure the many gaps and correct them correctly by choosing the appropriate size shims and circlips. Thus, if it becomes necessary to overhaul the transfer case, its removal and installation can be performed by an amateur mechanic, while the actual repair and restoration should be left to the car service specialists. There is a possibility of purchasing remanufactured boxes - consult the specialists of the dealer department. In any case, the time and money spent on repairing and restoring the old box will be quite commensurate with the cost of purchasing a restored unit.
Nevertheless, it should be said that the overhaul of the transfer case by the forces of even an inexperienced amateur mechanic is quite possible, provided that there is an appropriate special tool and an accurate and careful approach to performing each of the procedures, when not one of even the smallest steps is skipped.
Tools required to perform a transfer case overhaul include pliers for removing and installing both inner and outer circlips, bearing puller, sliding hammer, drift set, plunger-type dial indicator, and possibly a hydraulic press. In addition, it is absolutely essential to have a stable, comfortable workbench equipped with a vice, or a stand for dismantling transmissions.
Video (click to play).
When disassembling the transfer case, pay close attention to how each of the smallest components are installed, their position in relation to other parts, and the type of fasteners (take notes as you disassemble). The accompanying illustrations provided here are intended to help you understand the layout of the box - however, drawing up explanatory notes during disassembly still much more reliably guarantees the correctness of subsequent assembly.
Transfer case components type NP231
1 - Front holder of the crosspiece, its oil seal, sealing washer and fastening nut 2 - Plug, pin and spring of the switch lock 3 - the Front holder with an oil seal 4 - the Front half of the crankcase 5 - Vacuum sensor-switch with a sealing ring 6 - Assembly of the ventilation line 7 - Bearing and retaining ring of the primary gear 8 - Retaining ring of a gear wheel of a reduction gear 9 - the holder of the primary gear 10 - Thrust washers of a gear wheel of a reduction gear 11 - the Primary gear wheel 12 - the Guide bearing of the primary gear 13 - the Gear wheel of the lowering transfer 14 - a hub of a fork of switching of modes 15 - the Retaining ring of the hub 16 - the Distance washer 17 - the Springs of the synchronizer 18 - Sliding keys of the synchronizer 19 - the Hub 20 - the Coupling 21 - the Blocking ring 22 - Retaining ring of the front bearing 23 - the Front bearing of a secondary shaft 24 - the Front secondary shaft
25 - the Drive sprocket 26 - Drive chain 27 - Bearings of the drive sprocket 28 - Rear bearing of a secondary shaft 29 - the Driven shaft 30 - the Epiploon 31 - Assembling the oil pump 32 - Rear bearing of a driven shaft 33 - the Lock ring 34 - Rear half of the crankcase 35 - Filling plug with a gasket 36 - Drain plug with a gasket 37 - the Back holder 38 - Extension casing 39 - the Bushing 40 - the Epiploon 41 - the Mesh screen of the oil sampling tube 42 - Nipple connection of a tube 43 - Oil intake pipe 44 - the Sealing ring of the oil sampling tube 45 - Magnet 46 - Nut and washer of the lever of modes 47 - the Lever of modes 48 - the O-ring and the bushing of the holder of the selector 49 - Selector 50 - Fork modes 51 - Range plug 52 - Spring modes
Transfer case components, type NP242
1 - the holder of the front bearing with an epiploon 2 - the front half of the crankcase 3 - Switching selector 4 - a Fork of switching to a lower gear with inserts 5 - the Shift rod 6 - the Shifting bracket 7 - the Slider bracket 8 - the Bushing with a spring 9 - Fork of modes with inserts 10 - Bushing 11 - the spring of a fork 12 - the Bushing 13 - Assembly of the ventilation line 14 - Bearing and retaining ring of the primary gear 15 - Retaining ring of a gear wheel of a reduction gear 16 - the Holder of a gear wheel of a reduction transfer 17 - the Thrust washer of the gear of the underdrive 18 - the Primary gear wheel 19 - the Rear half of the crankcase 20 - Drain and filler plug 21 - the Rear bearing holder 22 - Extension casing 23 - the Bushing and the epiploon 24 - the Vacuum sensor-switch 25 - Magnet 26 - the Thrust ring 27 - the Lock ring 28 - the switching clutch 29 - the Gear wheel of the lowering transfer
30 - Guide bearing (primary gear / driven shaft) 31 - Front bearing of the front output shaft and circlip 32 - Shaft of intermediate clutch 33 - the switching clutch 34 - the Lock ring 35 - the Driven shaft 36 - Assembling the differential 37 - the O-ring of a tube of the oil pump 38 - Oil intake pipe of the oil pump with a mesh screen 39 - Rollers of the bearing of the driven shaft 40 - the Drive sprocket 41 - Drive chain 42 - the Lock ring 43 - the Oil pump seal 44 - the Oil pump 45 - Rear bearing with a circlip 46 - Rear bearing of the front output shaft 47 - the Lock ring 48 - Driven sprocket 49 - the Front secondary shaft 50 - Spacer washers of the driven shaft bearing 51 - Washer and nut of the shift lever 52 - the Lever of switching 53 - O-ring and sector oil seal 54 - Cork, spring and retainer pin 55 - the Sealing plug 56 - The front holder of the cross with a nut and a sealing washer, a slider and an oil seal
Transfer case components, type NP249
1 - the Epiploon 2 - the holder of the front bearing 3 - The front bearing of the driven shaft with a locating ring 4 - Front half of the crankcase (with a toothed ring of the underdrive of internal gearing and a bushing of the shift rod) 5 - the gear wheel of the lowering transfer 6 - the Primary gear wheel 7 - Thrust washers equipped with tongues 8 - Holder plate 9 - the retaining ring of the primary gear 10 - the clutch 11 - Clutch shaft 12 - the locking ring of the differential 13 - Differential assembly 14 - the Driving gear wheel of the driven shaft 15 - Retaining ring of a driving gear 16 - the Spacer washer of the bearing of the driven shaft 17 - Needle bearings of the driven shaft 18 - the Spacer washer of the driven shaft bearing 19 - the Driven shaft 20 - Viscous clutch 21 - the Retaining ring of the viscous clutch 22 - the Retaining ring of the oil pump installation 23 - the Oil pump
24 - Rear bearing of a driven shaft 25 - Retaining ring of the rear bearing 26 - the Drive gear wheel of the speedometer 27 - Assembling the rear holder (with a cap, an oil seal, a bushing, an access cover and a gasket) 28 - a locating ring of the rear bearing 29 - the Front half of the crankcase 30 - Rear bearing of the front output shaft 31 - Assembling the oil suction tube (with connecting hoses, mesh screen, tubes and O-ring) 32 - Assembling the shift fork with the rod (including fork lining) 33 - Drive chain 34 - the Front secondary shaft 35 - the Switching selector 36 - the crankcase magnet 37 - Front bearing of the front output shaft 38 - Retaining ring of the bearing 39 - Plunger and retainer spring 40 - Plug and retainer O-ring 41 - Lock nut and washer of the mode lever 42 - the Lever of modes 43 - Oil seal (front bearing of the front output shaft) 44 - the Holder of the secondary shaft cross 45 - the Sealing washer of the cross-piece holder 46 - the Nut of the holder of the cross
Before sending the transfer case for repair, it is helpful to have an idea of which part of the transfer case is causing the problem. Some of the defects are uniquely associated with different nodes, which can greatly simplify the troubleshooting procedure and reduce the time for troubleshooting. See also Section Troubleshooting at the beginning of the Guide.
.gif ”/> Let's list some of the features of this car: - Supports on the front and rear suspension are assembled together with the levers. The support is very durable for Suzuki, but sometimes it also needs to be replaced. In this case, they need to be changed along with the levers; - bearings are complete assembled with a hub. The outer ring of the bearing is the hub, the inner one is the splined part on the drive shaft. This design assumes easy and inexpensive repairs as needed; - cardan shafts are also assembled only, including 2 constant velocity joints and anthers. CV joint usually does not wear out, rupture of the boot leads to repair. With such a design, replacement of the CV joint will also be required. Anthers are often torn when the car hits the hole; - the boot of the inner CV joint can be purchased separately, but with the outer one it will be more difficult, it is not on the official sale. There are sets of 2 CV joints; - the car does not have repair mounts for headlights, the mount breaks quickly with a significant impact; - the transfer case is low by design, which, accordingly, reduces the geometric cross-country ability of the vehicle. The real ground clearance is much greater, especially if you put the protection of the Suzuki Grand Vitara razdatka; - the transfer case fogs up for the first 10-30 thousand km. In this case, when replacing, new modified oil seals save.
.gif ”/> For every motorist, knowledge regarding the prevention and repair of his car is relevant. Here are a couple of helpful tips. They will help you save a lot of money and time. Prevention and protection help maintain performance. Above, we considered the problem when the oil seal of the Suzuki Grand Vitara transfer case leaks. The problem, though small, is nevertheless annoying. Often there is no desire to go to a car service. The oil seal can be changed independently and the process will take no more than half an hour. And the cost of this procedure in the service is about 10-12 thousand rubles. To replace it, you will need to unscrew the rear universal joint from the gearbox (rear), take it out of the transfer case. The next step is to remove the oil seal, and then insert a new one. The procedure does not require draining the oil. Moreover, the replacement is easy, since the cardan is held on the slots and is installed in any position. For these purposes, you may need a diagram of the Suzuki Grand Vitara dispenser in order to have a good idea of the position of the parts.
The transfer gear guard is a special structure made of 3 mm steel or composite. Mounting instructions are included with the product. This part will help protect the transfer gear from mechanical damage, which is especially important with low ground clearance. Suzuki Grand Vitara transfer case protection really helps to reduce the number of transfer case replacement cases. It is worth remembering that full protection of the transfer gear is not needed. This will add extra weight and contribute to overheating in the summer.
Today we are servicing a Suzuki Grand Vitara car, on which it is necessary to replace the transfer case oil seal. We will show you a detailed photo and video instruction on how to do everything yourself.
Leaking oil seal is one of the common problems in this car, if you look under the bottom, you can see traces of oil around the transfer case. To get to the oil seal, it will be necessary to remove the propeller shaft.
We unscrew the 4 bolts attaching the propeller shaft to the flange of the rear gearbox, it is most convenient to do this using a 17 socket head with a knob and an open-end wrench:
We take it to the side and lower the gimbal down, after that we take it away from the transfer case with our hands and remove it. We remove the oil seal with a reverse hammer, at the end of which a hook is installed, we start it by the oil seal and pull it out:
If you do not have such a tool, you can, in principle, cope with improvised means, although it will be much harder. To press in a new oil seal, we need to select the appropriate mandrel. Its diameter is 54 mm, the mandrel should be slightly smaller.
We use a mandrel with an outer diameter of 52 mm. First, we place the oil seal by hand on the seating surface, as far as possible, so that it locks in there. Next, we press it in with our mandrel (by the way, it is from a set of tools for repairing a Moskvich gearbox):
It is not worth "getting carried away" strongly with pressing, it is necessary to deepen it from the edge of the chamfer by about 1 mm. After that, we put the propeller shaft in place. If necessary, add oil to the transfer case if you have been driving for a long time with a leaked oil seal.
Video of replacing the transfer case oil seal in the Suzuki Grand Vitara: