Train jerked each time speed reaches 50kph to 60kph. No fault indication. ~~~~~ Train jerked each time speed reaches 50k

    ER dowdload no fault realted propulsion/Braking.
#1646-B2 found CCD weal link shear off,replace CCD assembly,check all ccd height within spec,fuse ok.All M-car line breaker-L1,L2,K contact checked ok.Check pre-charging resistor ok.INV1,INV2,BCH,BRE-OK.Conduct propulsion statis test-ok.Check BCP found #1646,#2646,#2645,B1,B2,B3 pressure out-replace.CP (pressure transmitter)-ok.BCP within spec.#1646 found ACU RF solenoid hunting at EM.0020 raise to follow up.
#1646-CCD assembly-
Old s/n: 2512
New s/n: 2283
Not: 2320177 raise.
#1646-PT-Not: 2320178
#2646-PT-Not: 2320179
#2645-PT-Not: 2320180

Done by Haslan/Asruddin/Zul. 05/10/21

To follow up check on 1646 ACU RF solenoid hunting

#1646 ACU swap to #1646 and ACU RF solenoid v/v hunting transfer,since BCP was within and brake cyclic test ok.
To be further monitoring.
Done by Sanip/Faddzal. 06/10/21