12v 5a actuator to be control by a PIC16f877a..

[jungardc2]

hi masters..

i got a project with this: 12v 5a actuator to be control by a PIC16f877a..

the actuator works like a motor..when i apply 12v source to it..it pushes and when i invert the source it moves backward..
so it works like a punching arm..

i got an h bridge circuit between the PIC and the actuator but when i work with the program and the circuit..
the actuator moves very slowly and it doesn't move backward..

please help masters..my code is in PIC Simulator IDE or .bas code.

CMCON = 7
TRISD = fch
ADCON1 = 7
main:
	PORTD = 02h
	WaitMs 2000
	PORTD = 01h
	WaitMs 1000
Goto main
End

this is the h-bridge i used..**broken link removed**

P.S. i had used PIC16f877a with other projects
so circuit configuration like crystal oscillators and pull up resistors with the PIC is not the problem.