Weifang 495 - Checking of the Correct Tension of the Belt

sods) plus 250 grams ofkerosei~e ori kg'. ot sodium c'arbonate (so-
da) plus o. Sliter of kerosene into every 10 liters of ,cle'anwater to
form, a descaling solution (t:le full capacity ot the engine cooling
system is about 14 liters)
b.Drain o£f the w:ater within ,the cooling system and fill ~the
system with either one of thes.bo've me&tione,d solutiollS.
c. Start the e .. 1.gine and set it running at med:umspeed (800~
1500 rpm) for ,5-10 minutes.
d. Stop the engine and iet the solJtion re'ma~n in the: c.ooling
,system for lO~ 20 hours. Then 'Ollerate the 'engine again for 5-10
,minutes to heat up tA~e sCliutior.l.
e. Stop the engin.e ,dr&in off the solution in:r:1ediately and ,flush
the engine cooling system w~th clean water after the engine cools
down.
(4)The V--IJeit 0-£ model B ~143(GB 1171--74)'is adopted 'to
.. .....• ..
drive the fan of' the eng~ne.The belt tension should be maintaine'd
with inc'~~tain' "~'imit. 'i() check whet~~er the te:lsion ,of 3 ---- 5kg at
midway betwee~· the fan a~1d dynamo pulleys, -.:he be!t should slope
down 15~25 mnl as shown i"n?ig. 31.
press the bell (1()w~1 fit its micidle p()~i:ic;n llY thumb
dynamo puHey press
dovin by 15- 25mm
,~
water pump pulley
Crank shaft pulley
Fig. 3: Cl:.ecking t~l'~ correct lensi<ln oi ~he belt
If the belt is tc .. ) tight, it will calLS~ excf~s~~i'7e wear of the.
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