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Very difficult,

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suitable for expert DIY ^
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Specifications


Note: Models are identified by their production code letter - refer to 'Identification numbers' at the front of this manual for details.

Coolant

Mixture type and capacity.................................................................. see Chapter 1

Pressure cap

Cap valve opening pressure............................................................... 13.5 to 17.7 psi (0.93 to 1.22 Bar)

Fan switch

Cooling fan cut-in temperature............................................................ 98 to 102°C

Cooling fan cut-out temperature........................................................ 93 to 97°C

Coolant temperature sensor

Resistance J and К models

130 to 180 ohms 26 to 30 ohms 47 to 57 ohms 14 to 18 ohms

@ 50°C..........................................................................................

@ 80°C.........................................................................................

L, N and R models

& OK) \j..........................................................................................................................................

® 120°C.......................................................................................

Thermostat

80 to 84°C 8 mm (min) @ 95"C

Opening temperature...........................................................................

Valve lift...............................................................................................

Torque settings

Note: Where a specified setting is not given for a particular bolt, the general settings listed at the beginning apply. The dimension given applies to the diameter of the thread, not the head.

5 mm bolt/nut......................................................................................... 5 Nm

6 mm bolt/nut......................................................................................... 10 Nm

8 mm bolt/nut......................................................................................... 22 Nm

10 mm bolt/nut....................................................................................... 35 Nm

12 mm bolt/nut............................................................................... ____ 55 Nm

6 mm flange bolt with 8 mm head...................................................... 9 Nm

6 mm flange bolt/nut with 10 mm head............................................... 12 Nm

8 mm flange bolt/nut........................................................................... 27 Nm

10 mm flange bolt/nut........................................................................ 40 Nm

Cooling fan switch.............................................................................. 18 Nm

Coolant temperature sender................................................................ 10 Nm


3*2 Cooling system


1 General information

The cooling system uses a water/antifreeze coolant to carry away excess energy in the form of heat. The cylinders are surrounded by a water jacket from which the heated coolant is circulated by thermo-syphonic action in conjunction with a water pump, driven by the oil pump. The hot coolant passes upwards to the thermostat and through to the radiator. The coolant then flows across the radiator core, where it is cooled by the passing air, to the water pump and back to the engine where the cycle is repeated.

A thermostat is fitted in the system to prevent the coolant flowing through the radiator when the engine is cold, therefore accelerating the speed at which the engine reaches normal operating temperature. A coolant temperature sender mounted in the thermostat housing transmits to the temperature gauge on the instrument panel. A thermostatically-controlled cooling fan is also fitted to aid cooling in extreme conditions,

The complete cooling system is partially sealed and pressurised, the pressure being controlled by a valve contained in the spring-loaded pressure cap. By pressurising the coolant the boiling point Is raised, preventing premature boiling in adverse conditions. The overflow pipe from the system is connected to a reservoir into which excess coolant is expelled under pressure. The discharged coolant automatically returns to the radiator when the engine cools.

Coolant is routed around tne oil filter adapter on the front of the erankcase to cool the oil passing through the filter. On J and К models, hoses route the coolant from the water pump cover to the filter adapter and back again. On L, N and R mode s, coolant is supplied to the filter adapter via a short hose running from the coolant union on the front of


the engine and the hot coolant is returned via a hose to the water pump cover.

A

Warning: Do not remove the pressure cap from the filler neck (J and К models) or radiator (L, N and R models) when the engine is hot. Scalding hot coolant and steam may be blown out under pressure, which could cause serious injury. When the engine has cooled, place a thick rag, like a towel over the pressure cap; slowly rotate the cap anti-clockwise to the first stop. This procedure allows any residual pressure to escape. When the steam has stopped escaping, press down on the cap while turning it anti-clockwise and remove it Do not allow antifreeze to come in contact with your skin or painted surfaces of the motorcycle. Rinse off any spills immediately with plenty of water. Antifreeze is highly toxic if ingested. Never leave antifreeze lying around in an open container or in puddles on the floor, children and pets are attracted by its sweet smell and may drink it. Check with the local authorities about disposing of used antifreeze. Many communities will have collection centres which will see that antifreeze is disposed of safely. Caution: At all times use the specified type of antifreeze, and always mix it with distilled water in the correct proportion. The antifreeze contains corrosion inhibitors which are essential to avoid damage to the cooling system. A lack of these inhibitors could lead to a build-up of corrosion which would block the coolant passages, resulting in overheating and severe engine damage. Distilled water must be used as opposed to tap water to avoid a build-up of scale which would also block the passages.

their production code letter - refer to 'Identification numbers' at the front of this manual for details.

Himn Models are Identified by

Hint


2 Pressure cap -check

I

1 If problems such as overheating or loss of coolant occur, cheek the entire system as described in Chapter 1. The filler neck (J and К models) or radiator (L, N and R models) cap opening pressure should be checked by a dealer with the special tester required lo do the job. If the cap is defective renew it.

Coolant reservoir -

removal and installation

Removal

1 The coolant reservoir is located under the seat, ahead of the rear wheel. Remove the rear wheel (see Chapter 7) and the rear shock absorber (see Chapter 6), and allow the swingarm to drop down for access.

2 Release the clamp securing the breather hose (coming out of the top of the reservoir) and detach the hose (see illustration).

3 Place a suitable container underneath the reservoir, then release the clamp securing the radiator overflow hose to the base of the reservoir. Detach the hose and allow the coolant to drain into the container (see illustration 3.2).

4 Unscrew the reservoir mounting bolt(s) (see illustration 3.2) and remove the reservoir; on L, N and R models note how the lug on the left-hand end locates in the hole (see illustration).

Installation

5 Installation is the reverse of removal. Make
sure the hoses are correctly installed and
secured with their clamps. On completion
refill the reservoir as described in Chapter 1.


 


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Читайте в этой же книге: Cylinder bores | B Connecting rod size number (A) and weight code (B) | Renew the piston and pin | B Measure the internal diameter of the bore in the piston | B ... and fit the side rails each side of it. The oil ring must be installed by hand | Oil clearance check | A Discard the oil seal if it is worn, damaged, or shows signs of leakage | To keep them in order and facing the | A Slide on the thrust washer ... 29.15b ... the 5th gear pinion bush . | B ... and the thrust washer |
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D ... and tighten the bolts to the specified torque| Cooling fan switch

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