Weifang 495 - Water Pump and Fan Assembly Diagram

without being cooled by -the radiator. This isso ..... called "short cir-
culati6n ".
The water pump used on the engine is of centrifugal type. The
pump and the fan are assembled into an independent unit installed
on the front end .,of the cylinder block with' a bed plate and driven
by the 'crankshaft pulley through a V - belt. The pump capacity
shdii;ld "be greater than 100 liters/min. while the pump speed is
3000tpm and the discharge head is 6 m.
The water pump consists mainly of pump housing, impeller,
pulley,pump shaft and water ·seal etc as shown in Fig 30.
, .
9 ]0 11 12 13
,..-- /r-- /'~ /---- / ,""-
/ / :/ //
/
/
/
/
Fig~ 30 Water pump and fan assembly
I-Water pump shaft';2-Pulley;~-;-Fan sub-assemblY';4-"60203"bear-
,ing,S-Grease nipple;6-Water slinge~';·7--.;..-.Seal·sleeve;8-Water seal gasket;
9--Water seal spring;lO-Water seal;"i."l:'-';·· -W~ter pump impeller; 12-Bed plate;
13-Watet pump housing.
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