- Joang d~m rach hong.
6. Phrrong phap ki~m tra va sfra chtra pan h~ th6ng Iai va cdu trmrc d§n h mmg
mmg
a) Hi~n tm;mg va nguyen nhan hu hong
Hi~n trrQ'Dg brr h6ng Nguyen nhan brr hong
- H~ thong lai ho~t d9ng c6 - Banh vit, con Ian va 6 bi: mon, nut vo, r6
, '
nhi@u, thi€u d!u boi tran. tieng on
Khi o to ho~t d9ng nghe - Tf\lC tay lai: cong venh.
ti€ng 6n khac thuong_ a C\lm - Ch6t chuy@n hu6ng, b~c lot va cac kh6p c!u ca cfiu lai, t6c d9 cang 16n mon nhi@u va thi€u mo boi tran.
ren.
- Dieu khiSn tay lai n?I1g - Don quay dung: cong, venh va mon phan
...
va khong 6n dinh then hoa.
Khi di@u khiSn vanh tay - Cac thanh keo d9c va ngang: cong. lai cam thfiy n~ng hon binh - Di@u chinh sai d9 ch\llll cac banh xe.
thuong va rung gi~t, t6c d9 - Dfim cfiu bi cong venh ho~c mon b~c va ch6t cang 16n sg rung gi~t cang chuySn hu6ng.
tang
- H~ th6ng lai khong c6 tac - Dm, gay thanh keo d9c ho~c gay, dm kh6p
d\lllg (mfit lai) cau. '
Khi o to dang ho~t d9ng, - Dm, gay thanh keo ngang ho~c gay, dm kh6p
,.,.
' nguai lai xoay vanh tay lai cau. nguai lai xoay vanh tay lai cau.
khong c6 tac d\lllg di@u - Don quay dung: long then hoa, tu9t dai 6c khiSn, xe v~ hanh khong 6n ham ho~c dm, gay ch6t cfiu.
dinh (mfit lai) rfit nguy hiSm.
- H9p tay lai va b9. trg lgc - Vo h9p tay lai: bi nm, ha va hong cac dau
lai chay ri d&u n6i, d~m.
Ben ngoai vo h9p tay lai - BQ trg lgc lai: bi nm, ha va hong cac d&u n6i, va b9 trg lgc lai c6 v@t bAn, d~m.
chay ri d&u boi tran.
b) Phuong phap kiSm tra va sira chua pan
► KiSm tra hu hong h~ th6ng lal va cfiu tru6c dfin hu6ng:
- KiSm tra ben ngoai cac b9 ph~n h~ th6ng lal va c&u tru6c dfin hu6ng.
- Khi v~n hanh o to , ldSm tra h~ th6ng lai va c&u tru6c dfin hu6ng c6 ti@ng keu '
► Sira chua hu hong cac b9 ph~n
- Kiem tra, v~n ch~t cac bu long , dai 6c cua cac b9 ph~ h~ th6ng la va du
tru6c.
- Kiem tra, di@u chinh d9 ra va Ive xoay cua vanh tay lai, boi tran cac ch6t xoay va thay the cac b~c, d~m va b9 ph~n hu hong cua h~ th6ng lai va c§.u tru6c dfui hu6ng.
Vanh tay lai
\-- '·<,, --· '·<,, --· i~. • :.·/:\ I Tn.ictay lai a(
Vanh tay lai
b)
Hlnh. 5-6: SO' ab ki€lm tra h,rc xoay vanh tay lai a) £>o 11,J'c xoay vanh tay lai; b) Ki€lm tra dQ rO' cua CO' c!u lai